I would highly suggest reinforcing the vert. fin/fuselage joint with some triangle stock. Mine broke after 1 flight and a ground run. I was exceptionally careful NOT to score the wood when removing the covering prior to gluing and the subsequent inspection revealed that it was not the cause of failure. Fortunately, I discovered the fracture durring the ground run and not in the air.

I would also suggest reinforcing the wing jount with fiberglass. I just had an unintentionally abrupt and very hard "landing"[:@] with an overly vertical approach (Yes, it hit on all wheels only) that literally folded the wing at the joint right over the fuselage. The wings parted company and all 12 rubber bands remained strung on the fuse. Note that the glue joint held up fine, but there was a lot of splintered wood on either side. Aside from that, it is an amazingly tough plane and great fun to fly with a strong .46 engine.