I just went through this last week so it's fresh in my mind. I just used the cheap Comp cams plastic one and notched in 3 places for the bolts with a small sanding drum in a Dremel. I had the same issue with the ARP bolts touching the cover so I installed a thicker gasket from Superformance. Greg makes the timing cover gaskets in different thicknesses. I put my timing cover on and it just touches the button. So now I'm happy for an easy fix up

Gus beer

64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60