Hey Guys. Ive got a 78 Bonnie that sat in the garage for the past year. Started it up the other day and it ran rough, white smoke coming out more one of the pipes then the other, and coughing pretty bad. Drained gas, replaced with new gas, new plugs, and new coil wires. Starts on first kick, and idles great. Problem is when I start to ride off it back fires, kicks, and sputters big time........Any ideas on how to resolve? Was thinking timing issue, but whats the deal with the white smoke...and if it was a timing issue would it idle so well?