Hi I just bought my first bike last week, a 1982 Suzuki GS300L which didn't run but turned over. I cleaned the whole fuel system and rebuilt the carbs and got it to run (also the airbox has been replaced with K&N air filters.) There is significantly more exhaust coming from the right side of the bike. The left side exhaust has a normal amount of exhaust, the right side ejects a lot of smoke even at low idle, and continues to eject this smoke up to a minute after the bike has been turned off. What is most likely the problem? Thanks for any input!