So after taking the 16 apart (again) to clean the pots I was thinking about drilling a couple of small holes above the pots for easy access and it looks like Yuneec already thought of this.....Tried it on a second one and it appears to work just fine.....Your Welcome......
Those access holes are typically for adjusting stick tension. I have many Spektrum radios and have never cleaned the Pots, they are self cleaning just from being used. I have a recording studio and Pots that do not get used regularly can make scratchy sounds when rotated. The fix is to simply keep rotating back and forth until they wear themselves clean. If it still is dirty I use this....http://www.musiciansfriend.com/acce...Lw_wcB&kwid=39474984916x42814104161x151905500