Cleco the R/H wing tip into place and finished drilling the holes to a #30 for A4 rivets. I have two holes that are drilled to a #21. The very forward one on the leading edge. That hole is the one I started with and it got a little oblong from the cleco. The #21 bit did clean up the hole. The other hole is in line with the aft spar. I ended up drilling that one to a #21 as I was drilling the aft spar.