I went and read the instructions like 3-4 times on this matter and seen were it says do not attach removable wing tip until fabric covering is complete. But overlooked the part about the 3/4 inch metal strip!! I riveted it on the end cap. I'm thinking that I will need to remove the metal strip to glue the fabric on the cap and over it. Am I thinking correctly on this? So i'm guessing the rivets will go through the fabric on top of the last cap when finished?