The next major problem to be solved is the airflow rate through the stock twin CV carbs. My suspision is that at 100km/h - 110km/h in 6th gear the carbs are running on the off idle cuircit, due to the low demand for power resulting from better aero and gearing. My prefered options are make an intake manifold for a single stock CV carb, or find smaller carbs at a low enough price. Some posible candidates are two CV carbs from a 600cc 4cyl sport bike.
The problem for the single CV carb option is the space available for the manifold, eather the shape is very cramped with poor flow or the carb has to be relocated further away, which would involve relocatings lots of other stuff.
