At this point I had all the inside pieces attached and also had fitted the upper firewall so I tried on the engine mount again just for fun. Then it was back to work drilling out all the remaining holes to final size. I started with the firewall.
Then I did all the holes in the floor starting with the stiffener, then the spar tunnel and finished with the longerons.
Note there are still some silver clecos. I have not updrilled the splice plates and the two groups of seven silver clecos get drilled to a gusset plate added on the next plan page.
