RE: crockpot method
I have a phobia when it comes to carb cleaners. A friend of mine borrowed a can of my carb cleaner in order to clean an old dirty glow two-stroke. I am not positive of the brand and it was a couple of decades ago, but it really messed up the appearance of his engine.
Now, I do realize that others have found commercial carb cleaners that do not negatively affect their glow engines if they are exposed to the cleaner only long enough to clean the engine and then are quickly and thoroughly removed. It might make a good article for RCU if folks that have experience with carb cleaners that do not damage engine appearance would list them in an article for all to see. I have stayed away from carb cleaners since I stopped racing/maintaining my own automobiles.
Ed Cregger