Hey to all the Yuneec enthusiast out there, my post this morning is concerning error messages, and although my H has and is flying perfectly without problems I have noticed it is starting to get a little loose in flight (meaning quick little movements, dropping very slightly in altitude...basically mildly jittery...etc) it is very minimal and I hope not anything to be concerned with however I am getting error messages in my post flight summary in my UAV Toolbox app. I will first say that I do not feel I have been calibrating my compass and accelerator properly truth be told, just wanted to mention that as I feel it is probably the reason for the error message?. I have been studying telemetry all week on my H, I worked with the data to plug into Google Earth, I plotted out data in line charts...etc just looking around thru my information on board just out of curiosity and to understand my craft that much more. As I dig into my summary reports I am noticing a trend in error messages and info, my first 12 flights I was showing zero error messages, then I started getting compass calibration errors, slowly but surely more and more. I have calibrated the compass several times but I have done it on top of my roof top from the building I live, and where I take off from most times. I live in downtown San Francisco and my roof is obviously completely surrounded by concrete buildings, skyscrapers, structures, about 15-20 satellite dish TV antennas.....etc an amazing place to fly however I feel instinctively not a good choice? And concerning accelerator calibration I have done that as well a couple dozen times over the last couple of months, however I just saw a video from Yuneec explaining the importance of all the little details of calibration. I have not been finding true north, and or using a spirit level...etc Once again I am just trying to give as much info as possible and to be honest in what I have been doing in the hope I can give an accurate account...etc The error messages slowly started maybe 2-3 compass calibration error per flight, happening every other flight....etc then it started increasing dramatically, a few flights I see over 40 compass calibration errors during my flights. The other thing I want to mention is in the past few months of flying since purchasing I have only gotten maybe 3 messages on my ST-16 that came thru and alerted me, meaning had I not looked at the telemetry data I would have not seen any of the errors, nor would I know anything was going on????? It was digging thru my summaries and due diligence that I found any of these, although I have to be honest and say I have noticed a slight bit of performance difference in that my H seams to dip and move erratically, but it is very minor and happens once in a while. Anyway to summarize after reviewing my telemetry data of my Typhoon H pro that I have owned for 3 months, I noticed compass calibration errors start roughly a week or so into flying it, and has progressively gotten worse and worse, I also had one other error message, a Motor_failure_ESC? I watched the media, and reviewed my data for this flight and I do not see anything that happened for that message? It lasted literally for 1 sec during my flight? I also noticed my FSK. values went from within range (at least by the color indicated in UAV) to red for almost every flight, and again that is in \the summary window looking at my data. If I had to take my best guess I feel as if I need to just take more time pre flight and calibrate properly, staying away from skyscrapers to calibrate next to LOL and just be more thorough in preflight check list. If anyone could help me out with this and maybe review my data and or offer advice it would be greatly appreciated, as I am just trying to be preventative instead of waiting for something to happen....Also even thou I am going to study each value today and the meaning of these values....FSK...etc if anyone could point me to a good source of interrupting my Telemetry data, thanks guys sorry to go on and on I just wanted to give every one as much info as I could as to help them help me.