Tonight I worked on my fix for the mistakenly countersunk roll bar flange. I finished the doubler, primed it, and glued it into position with clecos holding it in place. I needed to glue it so I could uncleco it without the doubler falling inside the rollbar.
I also made a test piece with exactly the same dimensions as the roll bar sandwich. I drilled two holes and tested the two different lengths of cherrymax rivets, because the thickness is almost exactly 1/4 inch, right between the two sizes. Based on this experiment, I chose the shorter length which gives a better looking shop head.
