If you have a drip from you boiler this is what you check. First the
expansion tank, the reducing valve, and the bypass valve that bypasses
the fill valve. This valve is usually installed to quick fill the Check Valve
system, or purge the water lines of air.
Often there is just a small problem that looks like a big problem. Do
not get excited and methodically check through the possibilities. You
will usually find that the problem is not nearly as bad as you first
thought that it was.

The stock carb on the bike you quoted has a 40mm CV (constant velocity)
carb on it. Surely there is a hypercharger that will fit the 40