I'm putting together a Top Models predator. This is the first time I've used aluminium wing tubes (It uses one on the tail too)

Dumb Question:-

Do I permanently attached the aluminium tubes into the pre-installed fibreglass guide-tubes, or leave them loose and removable? (Insuctions don't cover ths. I guess they figure I should be smart enough to know!!)

Thanks for any assistance.

They don't get glued to anything. :^)