Ok its definitely a blockage...

I swapped the drier, no change. So I then jumped the pressure switch and sure enough it went straight into a vacuum on the low side.

I checked condenser output lines and no kinks or anything. Is there a specific way to find where a blockage could be without just throwing parts at it? (I did flush the expansion valve, but maybe I should get another JUST in case whatever is lodged in there is jammed in good and the carb cleaner didn't get it out).

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