Compression test results

What seems strange is that it has an old 750dp on it which I would think might be starving it but the plugs look like this:
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You are mis understanding how a carburetor works. A big cube engine with a (relatively) small carburetor and lots of cylinder pressure, with a (relatively) small cam will make a big strong signal at the carb. But before changing anything parts wise you need to make sure it’s functioning properly. What’s your fuel pressure at the carb inlets? Is it dripping fuel out of the booster while idling?