I fly mine so hard I've bent the aluminum wing tube. I bend the aluminum tube in any plane I fly that has one. Not the tubes fault, mine and only mine. All I use to hold the wings on are what the kit calls for. (4) 4mm screws, two per wing. They work just fine.

Use a coat of auto wax on the tube to seal the aluminum.

The W/H Giles is different from the Diabolatin I think it's the tail.[8D]