It has to be tdc on the firing stroke. I'd pull the cover to check cam
Is tdc as well. Out of curiosity how does the distributor know the engine is tdc?
I think you've got too much advance. I see sbout 8 to 10 at idle (800 or so) and 33 -35 all in at 3000. I'd start with that and as suggested, try more when car runs right.
I'm getting the two dcoe threads mixed up. How did you synch the carbs?
Supplementary Question:
I have a 121 head that is a bit over 5.060, but it has grooves from cutting ring gasket. Can I just use a regular gasket and leave the grooves?
As I recall, the factory had several iterations of the standard shell to allow for slight variations. I thought they were colours. So maybe that explains the .3.
Correct. Just making the point. Front pulley is easier to see. Try putting car at tdc , find notch on pulley and see what it aligns with. Didnt tii have something underneath?