i bought a stock repro from a off brand site, they custom make the systems in their shop, by hand, like they were originally built. ill try the bill trick, my no.2 exhaust was stuck after the rebuild (lifter wasnt lubricated right) but i fixed that. ill certainly check. as for the carb, the only thing it could be is jets.. which i still have new of from when i tried to rebuild my original one (bought new, old one leaked like mad).