A little story about my experiance with Yuneec's customer service. The following is an email i sent to Yuneec after my patience had run it's course while waiting for the return of my Q. ....."Last November I purchased the Q500 4k , I did a lot of research as it was between this and the DJI phantom 3 pro. After looking at many online reviews I choose the Yuneec because of the positive feedback I saw regarding it’s outstanding customer service. That alone was the deciding factor on this purchase. After receiving the Q, I was quite pleased with build and performance, it exceeded my expectations! Ultimately I crashed it and it was completely my fault. I contacted Yuneec and got authorization on 2/11/16 to send it in (it was received by Yuneec service on 2/16). I was told it would take about 3 weeks to get it back to me as you had a backlog, not what I wanted to hear but I appreciated the honesty. About 4 weeks later I was called with an estimate of about 200.00 I approved it and gave my American express card and was told that they would have it out by the end of the week, that was 3/7/16. On 3/21 I called back to find out where it was, after several minutes on hold I was told there was a problem with my card, so I checked my account to find it had not been charged, but I also had a zero balance , so there was no issue on my end. I gave the gentleman my AMEX card info again. The next day I got a call from a lady at Yuneec saying there was a problem with the payment , again. I was about to give her the Amex card again and she said “Oh, it looks like we no longer accept Amex”, so I gave her a Visa. She told me the unit was ready and would ship the next day. That was 3/22. On 3/29 I was still waiting, so I called back again, this time the lady I talked to was a bit confused and didn’t seem to know the status, but said someone from the service would call me back shortly, they didn’t. the next day 3/30/16 (yesterday) I called back and talked to guy who sounded like he was still sleeping, he too had trouble finding out the status, after being on hold for over 20 minutes he finally told me there was a problem with processing the payment but it’s all straightened out now, and the unit is on the dock ready to be shipped “next day air”, it was, and I received it this morning. Which brings us to right now. the front “a” motor threads are now cross threaded as you can see from the pictures. It came out of the box like this. the other 3 went on without issue. I know how to mount the props, I have done it many times and I also know this was not like that when I sent it in. And I am not quite sure how this unit was actually tested when you could not get the prop on correctly? Needless to say I am not the least bit happy at this point. I have the Typhoon H on order with Unmanned Systems Source here in Tucson, I have also recently signed on with them to help out with their consumer UAV division and have already sold an additional “H” as well. But in light of these issues I am now rethinking my relationship with Yuneec altogether and may take another look at the DJI’s . Please let me know what you intend to do about this as soon as possible. John K. Fitzgerald "........ Shortly after sending this Email, Mike form Yuneec called me and apologized for all the trouble, he said he would send a call tag and once i sent the unit on it's way, he would ship a brand new replacement. A few days later i received the "new" unit. However, it was actually a much older serial number and there were some differences. The first thing I noticed( aside from the serial#) was a antenna wire in one of the landing gear struts, no problem i assume this is the link between the st-10 and the Q. the second thing was the motors, my original ones were black, these are silver, not sure if there is a difference there but they do seem to sound a bit different. But again no problem. The bigger issue was the the mounting for the camera, no electrical contacts (hot shoe if you will), so now i know what that little black connector that came with the kit is for. Now normally this wouldn't be a problem either, but I have some aftermarket lights that I use which are very bright white LED's that i mount to the front of the unit. This helps me determine which way the unit is facing when it's several hundred feet out, and I used the power port on the bottom of the Q for the lights, now of course I have the camera plugged in to that port. I can make a jumper with a quick disconnect to accommodate the lights and camera, but I shouldn't have to. I did not contact Yuneec about this issue as I am tired of being without my Q and I just want to fly! So after all that, what is my opinion of Yuneec's service? Well, not as high as it once was, but keeping in mind that we are all human and we do make mistakes ( I have certainly made my share) the fact is that Yuneec was easy to get a hold of, and pretty responsive to my situation. They were very friendly, and they did at least try to make it right. yes they dropped the ball, it was a comedy of errors for sure. But at the end of the day I really believe their intentions were to keep me happy (and that bought them some loyalty). Yes, they could have done a better job. On a scale of 1-10, right now I am at about a 6.5 My Q has flown without incident and I am happy to finally have it back. I still believe in Yuneec's commitment to it's customers and therefore have decided to keep the "H" on order.