so I tried the carb spray test, no problems anywhere, though when I sprayed the manifold/carb junction, the bike slowed down, did not speed up. Clutch wasn't too tight.
I planned on playing with the airbox/pantyhose ideas, but I don't think this is the underlying problem. Being too rich or getting too much air still doesn't explain why I can't get more than 5 miles our with the stock pipe(does it). If I was getting 20mph then I could see the tweaking making up the difference, but doesn't explain this.
because the bike will go 20 with the prf exhaust on it does this mean that I need a 48-50 jet (as opposed to a #54 which came stock). is #54 (at all needle levels) just so rich the stock pipe (deristricted) just can't keep up with expelling from the carb?