Primered aft deck and wet riveted it in place. Attached HS and torqued bolts. Required 5/32” shim for aft HS spar to station 11 fitup. Access to the area forward of the station 10 bulkhead requires small hands or clever use of tools. I used a magnetic pick-up tool to mount the AN970 washers and a hemostat to grip the shear nuts until the threads engaged. Rans has made this area difficult to access and inspect. That's also true on the Vans RVs.