Sorta the poly-tube mod.
Took a piece of vinyl tube, cut to just a smidge longer than the stock port insert, then stuck a short piece of Ace hardware brass tube inside the vinyl.
I suppose one could take a piece of aluminum rod that just fits the vinyl snuggly, and drill it to whatever size port one desires to the same affect.
Found a slightly better seal at both the barrel and valve than stock, no tube distortion to screw up the air flow, and one can size it to whatever desired. |