You mentioned that the transfer slot being square, how can this be when the transfer slots are machined into the baseplate of the carburetor. I don't have the knowledge or experience with carburetors like the guy's on here do. Just exactly what is adjusted when you guys are talking about this, how's it adjusted?
in the lexicon of carb tuning "to square the transfer" refers to bringing the throttle blade perpendicular (or there abouts) to the rectangular transfer slot thus making the effective area "square".