Completed step 10 and most of step 11 page 20iS/U-05 Step 10: Cleaedr away chips, deburred and re-installed F-01204D-1 and F-01204F-L-1 & -R-1, and F-01204G-L & -R with clecos. Step 11: Riveett F-01204D-1 and F-01204F-L-1 & -R-1, and F-01204G-L & -R to F-01204-1. See Page 20iS-06 for rivet call-outs. Had some issues with the CR3213-4-8 rivets. Stems were breaking prior to setting the shop heads.I reviewed the process in Section 5 for preparing the rivets prior to use but these procedures did not seem to help. Decided to quit and order a batch of new rivets to see if the new ones perfomed better than the ones that I have had delivered about a year ago with the kit. I had tried both manual and pneumatic pullers and the performance was inconsistent.