Has anyone tried this 337 skymaster kit from nitro planes?http://www.nitroplanes.com/337tw2555.html

I haven't tried it, but I've looked into it. It looks ok, but it has no rudders or flaps

I had one. The rear engine was inverted, so I had to lower the rear fuel tank to get the engine to run correctly. Nice flying little plane, but I once almost put it in the pits while taking off in a crosswind. When the nosegear cleared the ground, the wind pushed the tail around just enough to turn it towards the pits, and I had no rudder to correct with. I finally got it stopped, just in time. It's a real pain to take the wing/tailboom assembly off, though. If I remember correctly, you have to remove the rear cowl to get at the wing bolts. I just left mine assembled.