Got new drill bits today. They helped, but just barely.
- Finished drilling the 5 or so holes for the stainless fuel filler well (photo #1).
- Used a new countersink bit to make better countersinks for the spar tunnel angles.
- Then I installed (with clecos) the forward and then aft tunnel webs, and pilot drilled all the holes along the top (photo #3). Next I will need to drill up from the floor, into the bottom flanges of the forward and rear spar tunnel webs. The floor should really get rigid, then.