First I cut out the foam where the gear block go in. I had glued in the clips previously. I had a bad experience with 3M spray glue once, so I use epoxy for the wing sheeting. I mixed 30 min glue and spread it really thin. Then hit it with heat and scraped off any excess. Smashed the cores in the cradles and let them set overnight. The leading and trailing edges are epoxy as well. I'll probably pay a weight penalty for all the epoxy glue here, but it makes me feel better. The sheets were made with CA though.