A friend of mine has a Bene 36cc and noticed that he could turn to port fully but not starboard. The reason was that the clamp for the autopilot arm had slipped by about 30 deg. which restricted movement one way.

Well we undid the four bolts and moved it back into the correct position, but I noticed the rudder stock is fibreglass about 3" diameter.

It is diffictul to decide how tight to make the clamp. Too tight and you run the risk of crushing the rudder stock. Too loose and it slips...

Has anyone else had a similar experience and if so how do you assess the clamp tension?

thanks