Thanks, that's a lot to consider. No, it's not a fresh rebuild. It was missing the speedometer when I got it, and the previous owner had no information at all. It's burning about half a quart or more of oil per 100 miles, so it could be high miles. I had to clean the carbs, they were a mess. The only thing I replaced in them was the needle and seat. Main jets are 130. I live at about 6000 feet. It's the mythical one kick and it starts bike, so I hate to do anything to the carbs. The advance rod for the points was gummed up and stuck when I got it, but it's working fine now. Could be low compression I guess. I haven't checked that. I'll try to make it down to Harbour Freight and pick up a guage. Thanks.