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| It's a Kiki pump module. If you pull those individual barrells out you're likely to change the spill timing of each barrell. This is test stand work. IIRC, you can remove the entire pump module from the engine and send it to a pump shop.
It might be worth a call to the shop you intend to use first... tell them it's an 'N843' engine (Shibura)... tell them the problem and go from there.
IIRC, the module comes out with the fuel manifold and pumping units together but there is no cam as that thing either works directly off the engine cam or has a small cam below the pumping units. It's so long now that I forge exactly. It's not like the older engines with an add on pump that's directly removed, complete.
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