When you swapped back to your old carb, did you keep the fouled plugs in? Hows the spark getting to the plug look like? Is it a good strong spark?
To be honest, your overall compression numbers aren't great (not horrible, but not great). Don't know how a 100psi rating came to be in a service manual, but from experience I would expect it to be in the 150 to 200psi range depending on camshaft and compression ratio. At least they are all balanced within 10% of each other.
When you replaced the head gasket, did you go with a much thicker one?
