I know I am in the very small group, but I have not had much luck with Hitec over the years. It has been either really great or really bad, no in between.
I have servos I can use, the SG5010's will be more then strong enough for the Formula 3D. They put out 160 ounces at 6v. I have these in 4 planes now without an issue. They center great, plenty of power and do not cost much.
http://www.hobbypartz.com/kahaoubrmo14.html
I was hoping to see if any one out there had used the servos. I have a few planes I could use the extra power of those servo's.
Buzz.