I know a few have done this before... but I couldn't really find the same question in the forum search. Due to a wing sitting in the wrong place and a few unfortunate drips from an AC unit I find myself removing the top outer wing skin and the leading edge (there is some corrosion spots on the skin and I want to make sure the spar underneath is cleaned up and re annodized if necessary - will probably replace the skins as well. Here's the question - I've been VERY careful in drilling out the old rivets (only made a couple of "wish I'd done better" ones - out of a million). The issue is that the expansion of the rivet shaft when setting the original rivets causes a very slight enlargement of the hole that was so carefully made to tight tolerances in the first place. Its not visual but placing a new rivet in any of those holes is not a close tolerance fit and there is some play. If this was just a couple of rivets I wouldn't worry, but over a whole wing?? I'm sure setting a new rivet will expand to fill the slight enlargement but... should I use a longer rivet? Should I redrill and go oversize everywhere (yuk!)? Or should I not be concerned at all and just get on with it? Thanks, Doug drewry