rossmick,
I have had to adjust the clearance on my ROBARTS by bending the frame assembly on both sides of the socket head screw to relieve the tightness on the trunion. The bearing plate is riveted into the frame here and seems to distort the frame on some of the retract sets I have purchased. It is not difficult to fix but can be annoying. I guess the price would be double if we had to pay for the quality control we are used to getting in full scale aviation.
My only beef with the electric retracts is the slow retraction speed (much slower than scale) but I guess we can't have every thing.