After installation of rear upper frame, I had to bend frame to create similar radius and shape as forward frame. Next step was to mount the roll-bar from ICP, similar to US variant 65C3-10. This rollbar was fabricated to fit with the Italian canopy-frame. I attached it to upper frame with 4mm stainless steel rivets. And to upper front longeron 6-B-11-1, I used AN3 bolts, washers and locknuts. After primer and black top-coat I finally torqued the roll-bar to fuselage. To make a better fit, I fabricated a 2mm aluminium spacer and mount it between rollbar and longeron. I made spacer a bit longer and added a M24694-53 countersunk screw washer and locknut in the extra hole.
