Hello catfish.
Others who are far better at remote diagnostics than I am will have suggestions for you. In the meantime, I have more questions than answers. Not trying to be picky, just trying to understand:
What maintenance other than the ignition tune up was done before this problem started? Was the ignition tune up done *just* before the trouble began? Has any service been done on the carburetor?
When verifying compression, did you use the 'thumb test' or gauge?
When pulling a plug wire, I'd expect rpm of a properly running engine to decrease, not for performance to improve, as I think you mentioned. Did you pull the wire for each plug?
You mention the fuel pump is clicking and pumping fuel. Have you checked fuel pressure?
Have you inspected the spark plugs?
By the time I submit these questions others may have solved your problem.
Best regards,
Jack.