65 Barracuda daily driver

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Finally got around to taking old (left) and new pum (right) apart. My feeler gauge was rusted shut, so I'll have to get a new one before I can check the clearances. There's light rust on the outer gear and you can see a bit of wear on the plate. I will confirm the clearance, but not really a smoking gun?!

The wear on the hex of the intermediate shaft bothers me too, but it does grip the pump. I don't really want to spend another 50-60 bucks, if it's not really necessary. That could also wait until the rest is assembled.

Is there a chance that the oil passages in the block are clogged and is there a way to clean them by shoving a wire up there?