I've pretty well wrapped up the empennage and in waiting for the QB I figured I'd knock out the fiberglass tips. Got some spare 1/8" countersinks for throwaway use after the fiberglass details. The question is that the fiberglass tips I have don't have the required edge distance with the 1/8" CS4-4 pop rivets. I'm planning on using aluminum backing strips...so I dont think this is necessarily a problem ??? Also, any adhesives that have worked really well for anyone on joining the AL strips to the fiberglass tips? Any help would be really appreciated...thanks!!!