Bill,
I saw that on the Mikuni web site for the 48mm carby, they suggested a fuel
pump. I didn't know you could get clear float bowls?
George ( down under)

Hi George,
Lectron Fuel Systems have flat slide carbs with clear plastic float bowls. Similar to Mikunis.
go to www.lectronfuelsystems.net and click on carburetors. Lotsa good guff on carbs under Horsepower Research.
Cya, Dave McC