While I was doing some repairs I came across these recipes for "do it yourself" carby cleaners. There are 3 of them:

First one: 1 part gasoline, 1 part Diesel, 1 part MEK or Acetone and 5 parts auto transmission fluid. MEK is in paint stripper I think.

Second one: 9 parts Kero and 1 part paint stripper;

Third one: 25% Naptha or shellite (to act as cleaner) plus 60% kero (as a stabiliser) and 15% alcohol (as an oxygenator).

I have tried the second one but found it was a very lumpy mixture. However, it did seem to work as I had manually cleaned the carby in question many times before without success. 24 hours in that stuff worked-remember to remove any gaskets etc. Also, these mixtures are both inflammable (flammable these days)and will chemically burn skin etc - so be careful.