I probably do 2-3 dozen carbs per year, mostly twins , 350s 450s,etc and 750s. Here's our drill and hope it works for you.
Completely, and I mean down to the last o-ring and gasket, disassemble each carb, taking special car to remove all rubber parts.
Soak in Berryman's Chem Tool, 5 gallon "Pro"...