When using Cascade powder , less is better and even cheaper. I was using a 1/4 cup for five gallons , now I’m down to a tablespoon or even a teaspoon.  Too much crap in suspension in the water seems to inhibit cleaning process so start with small amount , change water often. Jets ,put jets in a plastic jar with simple green , put jar in water in machine. Nice clean brass jets & small carb parts.