Today I fixed those missing parts that wasn´t available during assemble. Drilled and rivet missing holes in 6-B-15-3 reinforcements. Rivet bracket 6-C-2-2L with extra long 4 mm rivets, after fabricate a shim placed under. Rivet safety belt brackets 6-B-21-3. Rivet camlocks 932600R1 underside fuselage, Now I got countersunk rivets. Installed rivnuts underside of fuselage, it was not space enought earlier.