I have serviced a few floats with retractable landing gear. The ones on the Cessna's are far more common. The inspection hole are a pain in the but as most of the owners strip the screws and done put enough sealant. It would make a nice detail on a model. On the Cessna's, the front wheels pull right into the float , and the rears raise. The Piper just raise up with the wheel being in front of the float(as the Cessna does) and the rear wheels also just raise up. Just some info. Your models are real eye candy. I am going to have to make a choice on this one. These are among my favorite planes in the world. They are so rugged and rugged looking.