Actually, Brad, the reason I got worried was that the plane had a bad wiggle in the air like the rudder was being pushed around. It did that once before when the same servo had two front screws come out and I thought it was that. I am actually surprised the jiggle is enough to cause the wiggle ;-)

This is a Futaba 3305..can cleaning the pot correct this? Could having too high tension on the pull-pull have caused this?

After pulling off the case, then what?