Cut PA-14 stringers for cabin front and drilled, deburred, dimpled & installed with 412 rivets from gauge panel to firewall. Marked and clamped PF-190 and !91 to cabin top, removed and marked rivet line on back side. I marked a straight edge with rivets on cabin to make sure new rivets missed the solid rivets. Drilled PF-190 & PF-191 from the back side for the 410 rivet. Then clamped parts to cabin and drilled though holes into PF-130 and PF-131 and clecoed in place. Cut slot into PF-193 & PF-195 and drilled and clecoed in place on cabin top.
