ATF has detergent properties and is good lubrication, too.
Be conservative and try half a quart to a tankfull of gas.
Go to www.m-100.cc and search ATF.
I have run it in my K-jet 6.9 and it works fine.
Don't overdo it.
Clean the screen at the gas line where it enters fuel distributor and the screen in the warm up regulator if you need someplace to use carb cleaner.
Way cheaper than techron, but it is good too.

Toluene, if you can find it at a paint store or Home Depot is good for cleaning, but use this sparingly and if your rubber fuel hoses are not in really good shape, I would stay away from it completely. It will turn rubber to jello as long as it is in contact with the rubber. Once it's gone the rubber will go back to normal.

Toluene is an ingredient in techron in real low concentrations.