First of all, I am building a RV6 and the cowl is the older style where you need to attach the intake scoop yourself. My engine is a o-320 E2d and the carb is a Ma4 spa.
My problem is that when I have the scoop in the correct position the top plate of the FAB is 3/4" (18mm) higher than the scoop inlet. (I have noticed most builders end up lower
I believe the easiest way to fix this issue is to mill up a billet ali spacer to go between the carb and the FAB. In the picture I made a temp wood spacer to check what size I needed. (Is this ok? has anybody else done something like this?