I am having the same problem on my elevator. I can get the recommended throw of 40 degrees, which may be enough, but i like having a little extra to be sure. You would think that it would be enough since they designed it for a 3-D plane and they say 40 degrees is enough. Ill try it this weekend and see. As far as everything else i am getting plenty of throw. My ailerons are at about 60 degrees and my rudder is touching my elevators. I have Hitec 615MG's with the aluminum servo arms from my dads Hitec 5945 hardware. I also have 4-40 linkages with ball links and metal clevises. The control horns are stock though. I just pray that mine doesnt have the sanpping problem that some of the other funtanas have had. Good luck with yours.