After heating up wing and getting to bend to the right shape, I seen where some builders placed an aluminum strip to strengthened the endof the wing as well as a good solid rivet area. Ran into several problems. Tried to use JB Weld to hold strip in place (did not work). Tried a few other ideas including adding more heat to the bend so that the to ends would stay down - BIG MISTAKE!! Ended up cracking the aluminum in several places where I had heated it up. Needless to say I lost my patience and took my fustration out with a hammer!