Pretty fun day of riveting. Main ribs final riveted to the left wing spar, front and rear. This was a little tricky due to the tight spaces but, if you use some basic blue paint on the manufactured head, tungsten bucking bar and remove the retaining spring on the gun, it comes out very nicely (set at 70psi with normal straight cup set). The last few ribs towards the tip were easily reached with the squeezer. BE EXTREMELY VIGILANT ON THE REAR SPAR WHERE THE RIBS ARE RIVETED!!! Look at the plans, some holes to the ribs will remain open to accept the aileron cap (note the small pieces of blue tape over holes on rear spar). Pretty awesome to see the skeleton complete and happy, minus nose parts. Next up I have to rivet the conduit angle to the ribs and move the assembly to the wing stand I have built( pics elsewhere).