Assembled central pipe (aluminium) 6-C-5-1 with "bearings" 6-C-5-2 and -3. The 2 levers 6-C-4-3L+R has been primer and painted. Spent some time to make levers to fit on outside axle. Adjusted right and left lever to be parallel. The AN3-10 bolts could not be torqued in normal way, just draw nut against outer tube than another 1/2 turn. All according to manual. When mounting lock level inside upper seat support 6-B-16-6, I found interference between lever and upper rivet in angle 6-B-15-52. These rivets has to be removed. They can probably block lever movement. I also found it impossible to rivet front outer rivet in angle 6-B-15-1. Only chance is to remove doublers 6-B-16-4, on both sides.