I'm almost done with mine, I did a few mod's to it 1) slightly bigger ailerons and longer almost to the wing root. 2) Replaced a lot of ply with contest grade balsa (the whole fuse is balsa). 3)Took out about a 1/2 inch of the dihedral on either side of the wing. 3) I'm using 2 mini hitec 225MG's for the aileron's, instead of using a single servo. I'm shaving 5oz just by using mini servo's and a micro HS-81 for the throttle with a AAA 720 Nimh battery pack. I'm going to run a OS 50 Sx with a 12.25X3.75 APC. I hope it's going to be a 3D/IMAC monster. I hope it is going to come in just under 5 Lbs. Ricky