I got a 76 cb360t w only 2600 miles on it. The guy i got it from said it sat around most of the time and hasent been run in 6 or so years. I got it to get good spark on both sides. I took off the carbs and cleaned them really good. I got it started but its only runing on one cylender. Does any one have any idea of what could be wrong. PLEASE HELP!!