Test fit of wing skins

The wing skins were test fit, including the fuel tank and outer leading edge skins. Some mismatches evident. I will be communicating with TAF do determine rational criteria for 1) rejecting a skin and requesting a replacement, or 2) elongating holes and ignoring the mismatch, or 3) upsizing rivets to absorb the mismatch

As I see it, I think it prudent to request a replacement root skin 4. This could be shipped flat with the fuselage kit. As for the fuel tank skins, the holes affected by mismatch are not believed to be particularly structural, so some elongation (even after upsizing) could be tolerated. Will check with TAF. As for the bottom root skins, the mismatch with the main spar front-facing flange is also beieved not to be structural, so elongation of the 4mm holes is tolerable. Due to the double layer of the flange, upsizing the inboard holes to 4.8mm is not an option, unless I can successfully counterbore (I have a 5/16" with 4mm guide). Upsizing the outboard holes to 4.8mm is a possibility.

More concerning is the mismatch of the left hand root bottom skin holes with the rear facing main spar flange. These holes are definately structural in nature. Will check with TAF as to whether any elongation is tolerable.

Will also look into possibility of obtaining a right angle chuck to permit possible counterboring the double flange holes to a larger size allowing 4.8mm rivets to be possibly accommodated.