My gripe is that the nose gear retract is designed very poorly. The retract arm is screwed into a plastic plate that pushes the retract into the retracted position and pulls the plate out for extended. So, when extended the only thing that was holding the nose wheel in the extended (down) position was the tention between the arm and the 4-40 wire running to the servo. They didn't lock completely and I had two of them. One hard landing, SNAP went the threads in the plate and the nose gear folded.

I ended up making a metal plate (by hand) tapping it, threading it, and soldering it to fix the problem. The fix cost more than the retract.

That's my gripe. My fix was still better than spending $50 for a 40 size robart nose gear retract. The real problem is we buy this plastic junk made in China and almost all our Top Shelf arf's are made overseas in order to keep the price below $200.