Brief Description: Fitting the Canopy Frame to the Fuselage 15
Don't drill the aft angle to the arch rib. I clamped this rear arch rib in place. Plans say to drill the side rail to it. I drilled a hole, but later found it didn't fit right.
* * * So I think you have to wait until the canopy is on to drill this interface. * * *
The rail and the arch rib are just not in firm position. The side rail can twist and the arch can move laterially.