I went out last night to practice some TR,hovers,& rolling harriers which are coming along nicely,I'm getting much lower with the RH's since they are pretty slow,no problem keeping up at that pace. I want to put on a good "show" during the fly-in this weekend. Only problem I had was an aileron servo decided to act up when I wanted to show a friend how far I've progressed,instead I looked like a moron flopping around like a wounded duck. When I landed I noticed the right ail sticking almost all the way up,then would drop later after going to neutral,no wonder!!! Thats the first Hitec 635 thats failed on me but it was 3 yrs old and in the 3rd plane so I'm not very upset,at least I got the plane back. It was most likely a "pot" failure,it wasnt a gear. Whats weird about it is the last time a Hitec servo took a dump on me was an old HS605 on the right ail of a Goldberg Sukhoi, it failed the same way?