340 Chugging instead of Reving

TT5.9mag said

Really it’s just for testing. I like a curve in a street car. But for a race car with a decent converter I dont see why anyone runs a curve. I’m not familiar with the Mallory magnetic pickup distributors though. I’ve only used their optical pickup distributors. @1969GTS340 do you have a part number on that distributor?

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The distributor is:
Comp S/S 32 series YH single pickup model which used keys to set the mechanical advance. I just checked the keys and found that I set it at 28* I may misspoke earlier.

Just so I am clear on locking the distributor... there is nothing in the instructions. If I need to dis assemble the distributor and set 32* mechanically, I'll need to measure the size of each key and come up with a spacer to reach 32. The keys only go to 28. I read someplace that if you don't have the keys you can use a drill bit in the size needed.
IF I do not need to set it mechanically, but only need lock the side set screws and turn the distributor to 32* with a timing, that would be easier IF it can be done that way. Or I could turn the rotor clockwise to reach the current 28 setting and lock it there... again just for testing purposes. Any thoughts, concerns or direction on these 3 options?