I was setting the control throws on my Cap arf when I noticed that the elevator acts funny: I have it in neutral, pull stick to take it up and then when I let the stick go to return to neutral, elevator ends about 3/4 of an inch from neutral. Only way to return to the neutral point is push the stick to go down then when I let stick go all is ok, elevator goes to the right point. Is this a servo problem? All the linkages are good and not bending. Thanks!

I had a similar problem, but mine was a slipping linkage. If you are sure none of the linkages are bending or slipping then try re-adjusting the servo arm by taking off the screw and re setting it. If this doesn't work then I would diffinatly say it is a bad servo. I am no expert, but this is just what I think!

G'day Mate,
Disconnect the pushrod from the servo, & try moving it by hand, if it is hard to move then it is your pushrods binding on something, if it moves freely then turn your radio on & move the stick & see if the servo arm returns to neutral, if it does'nt then the servo is the problem.

Disconnect the push rod from the servo and see if the servo performs properly with no load on it. If it does, you have a problem in the linkage, not the servo.

You could just observe the servo output arm and see if it returns to neutral each time or not. If the arm returns OK, then look for a problem elsewhere. Heck, it could even be in the transmitter though not likely.