Feels like the wings all over again as I have a lot of deburring and prep for each seat rib. I stopped the prep and actually finished a couple ribs and seat belt attachment. I used the #30 reamer to final size the seat belt bracket and rib holes when it was clecoed in place.
First seat rib prepped, primed and ready to rivet
Seat belt bracket clecoed in place
I didn't say in the instructions which side to put the rivet head on, so I chose this side.