Can't get it to idle right!

Thanks, all for input:D

I don't think it's a vacuum leak, because spraying the manifold and carb base with starter fluid didn't effect anything.

Phreakish

I set the initial timing at 12 deg. btc at about 900 rpm vacuum advance blocked, but hard to say because it doesn't stay there long

mguner

Yes a cast iron magnum manifolds so no heat riser valve so I don't think that's it.

RedFish said

If it runs perfect when cold but idles up and down hot, I would suspect fuel percolation.
When I had a see thru filter mounted horizontally above the intake I could watch the filter fill, then empty, then fill again, cycling the engine lean repeatedly. Only after hot though.

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I think your on to something there redfish. I have a clear filter, and it does look like it's running out of fuel. What did you do to fix this?