F-1279 edge break?
Jim, thanks for sharing your reply from Van's! That was my suspicion.
I hit the same point this weekend, clecoed them down and they looked "ok", but you never really no until you rivet them.
So...figuring the Van's folks were busy with firecrackers and BBQ, I broke the edges very slightly. Result was a perfect fit and no worries.
Ken, minor clarification: the instructions don't say "except the F-1279", they just don't say ANYTHING one way or the other about breaking the 1279 edges. I got cross-eyed looking for something, anything about it. Not in there. No offense, I know what you meant, but another reader might not.