Fitted and drilled R/H wingtip and tip rib onto R/H wing. Decided to use #6 screws and nutplates to install wingtips. Countersunk R/H and L/H wings for the tips. Also decided to install 1/4 x 1/4 x 36in. wooden pieces onto the upper and lower interior of the wingtips towards the aft. This area is a little weak and this should help keep the gelcoat from cracking due to vibration.