Mine is just about ready for maiden with Zenoa 20E's - I will probally do the wing joiner last - I plan on epoxying 1/4 ply plates inside wing at botm both sides and use a 1/16 flat steel strap on outside botm surface. One end of strap will remain secured to inboard side. I will notch wing saddle for clearance. The outboard side will attache wing for field assembly. I will use allen head bolts with blind nuts inside wing plate.