Hmmn,

I don't want to argue, but saying that a F40 won't 3D or knife edge is just wrong. It took a few flights to dial mine in, but with the right set-up it is not just a glorified sport plane. NO WAY. As far the F40 "coming apart", mine has been to hell and back without a scratch. I think the F90 has had some blow outs at high speeds.

Have fun,

GD