The first thing I did was to get both spars ready. Now, working on the tanks I realized that I installed 6 nutplates (3 per spar) that I wasn’t supposed to install that early.
In general everything went pretty straight forward with these steps. I got them prepped and assembled in around week and a half. Next I prepared the ribs and the rear spars which was a very tedious and boring thing to do, but the results are pretty good.
I started by fabricating a quick template to make sure that I placed holes for wiring around the same place on all ribs. After that deburring and priming.