Okay, so I finally have my RB Dellorto setup running, and it chirps like a little bird. Ends up that my air filter base plate is rubbing on my housings. I figured I'd get some extra inter-manifold gaskets and build them up, but is there a spacer out there or anything? It would need to be the same as a GSL-SE upper-to-lower pattern. Any ideas? Also, as long as I'm ordering gaskets (if I do), I wanted to order some extra jets to get the carb tuned. How wide a range would I need?