I like simple green aircraft formula it does a great job, but will make carb bodies white if left in too long.
I like the idea plastic bag for nasty stuff and putting harder cleaning agents in. Piolet jets are the worst, but after a week or two soak in simple green air craft it did the trick.
having clean pilot jets are essential. I bought a bunch from 4into1.com and they were the correct length had K stamped in them.