I got mine today. My buddy Scott and I started the build tonight. The only mod I wanted to do was adjust the main gear position. The gear are so far behind the cg, it makes rotation a little abrupt. All I did was to swap the mains side to side and flip them around. Drilled a hole in the rear of the gear block and presto, gear position moved forward about 3 inches. Could have moved it further forward by extending the groove in the block. We have a few ideas for the next one but I'm just going to fly this one as is. Going with the os50. Should be a hoot.