Could I seal up an air leak with Duct Tape? I don't have any RTV silicone, only silicone caulking...
Yes...Could be....I plan to put a tiny amount of JB weld over the hole in my exhaust gasket and see if that fixes my 4 stroking and reduction in RPM's at full throttle.
Edit: Just remembered that it wouldn't cut the engine with the choke on. This means I also have an air leak between my carb and engine, right?