Continuation drilling all the skins to the ribs, upsizing the holes, deburring, dimpling and countersinking as per plans call out. Unfortunately I creased the bottom of the leading edge sheeting pulling the protective platic off. Used a head gun to excite the molecules in the aluminium and this helped. Will consider fitting a landing light at this location if I am not happy with how it looks later, although I do prefer to keep the plane as light as possible and avoid the extra weight.
I needed to remove the rib modification bracket to allow acces to allow dimpling in the rib, drill out rivets, remove. dimple and put back together again...
