Thanks for the cautionary note. I discovered the wonders of white gas around the campfire some years ago...
Anyhow, I've gone back to carb cleaner and hot water as it seems anything with pressure to flush it is helpful but i'm losing steam at this rate... after about 18 hours in gas, nearly 4 cans of carb cleaner, and several 10s of minutes of flushing with hot water its still putting out very small grains of gunk when I shake it. I don't think I would really be comfortable using this before its fully clean, but I'm starting to wonder if it will ever get there.
Brad, when you flushed it, did you go from the bottom or top?