its my second topic. i have bought 2006 v star 1100cc classic with 4200miles on it. i thought it was good deal but not. bike was sitting about 4 years. tank was rusted alot. i finally found radiator shop who clean and seals. bike was bucking before i fix the tank. while waiting tank to be fixed i put seafoam with gas thru fuel hose and let the bike run 10min alot smoke came out. and once no gas left in carbs i fill only seafoam this time and let it sit for one day. and then drain it. now i got tank back and new gas. i take a ride today it was still bucking. so is there any problem with air or just carb need to be cleaned?