I drilled both F-6111 pieces to the aft top skin. All holes were deburred and then dimpled. The F-6111 pieces were then primed. The right F-6111 did not get positioned exacy where I wanted it, so I cut off an angle at the top of the flange. I used the cutoff wheel in the Dremel to cut off the top part of the canopy latch tube to make the canopy frame level. The aft canopy frame rail was taped into place.