Hmmmmm ..... Bill ..be more specific with the single set up ...like some pics ...of carb and manifold set up ...I’ve seen a lot of set ups ....the one thing you have to consider always is throttle control with a strait carb ...stock carbs are cv and the good thing about that is when all things are good it’s imposable to give it to much gas ..as the wrist on the throttle doesn’t control the carb ...in the process of stock also is they late in reaction tending to be lean ...now the stock timing set up as with advance curve is set up to handle this condition.....and when a strait carb is used the advance can get overwhelmed as it provides the gas like now ...on your 1200 the advance is mostly all electronic black box ...it dose have vacuum going to it ...and I know 4th and 5th gear I think are advance different ...this makes the ignition mostly out of your control ...also throttle control becomes training your hand ..it’s also a dial in tool ....to get blunt now when a non cv carb is used on a oldwing it’s my belief that the timing advance curve need to be increase to handle the instant gas delivery to the motor ...to be honest in this statement me personally have never dealt with the 1200 timing system even though I use a 1200 motor it is set up like a 1000 motor with different cams and my ignition is a c5 ignition and highly advanced over stock set up ...with my set up and parts mixing on motor my bike won’t hardly run on the stock ignition advance set up ....Brian has has quite a bit experience running SCC set up for a long time on your situation running the vw carb on stock 1200s ..hopefully he will chime in on this thread ....he been running his for yrs now ....so lot to consider here Bill ...especially if your not going to keep it ...stock carbs may be the best thing ...if your not getting good mpg then this is clear indication that the carb is not dial in good and throttle hand maybe dumping to much gas in ..as said I hope Brian chimes in and you posts some pics so we can see set up Bill
