Hey, this is first time on site. Just wanted to let you all know that I just traded two guns for one mint 78 XS750. The guy had the gas petcocks on PRI for primary. He could´nt figure out why the cylinders were filling with gas, and fouling plugs. Moron. So, three plugs later and some fresh oil, I have great bike that I just took to AMA museum. I´ll post a pic later.