Wow, I just finshed mine, no problem like that.

I did read the review on RCU for the GP Gee Bee, after that I did change the assembly order. Gluing the wing together last is a big help.

I alson ended up cutting the rear of the belly pan off so it would fit properly. It did not seem to weaken it, still stiff enough.

I also found some larger control horns for the ailirons, the bevel and gap is so big the stock horns did not lean over enough to get the hole over the centerline of the hinge

I installed a slightly bigger tank to go with my 120 surpass too, good luck