Timing /6 without advance port of the carb working correctly??

FURY440 said

I see another adjustment bolt like you said on the bottom, but to get to it,.I would need to remove the oil filter.

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Or pull the distributor. Or use the correct wrench to reach that underside bolt with the distributor in place.

With the dizzy having this extra adjustment bolt on the bottom,.do I need to loosen the normal adjustment bolt and the one on the bottom to get more timing?

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The one on the underside of the distributor has a longer slot than the accessible one. Loosen the underside bolt and move the hold-down plate a little to gain additional room on the accessible slot. But 5°BTDC is a fine setting, so for now you could just leave everything as-is.