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Only thing I'll add is if you get a pump and wonder if it has the billet or Powdered Metal (PM) gears; put a mark on it with a felt-tip pen. If the mark fades away, its Powdered Metal. Nothing wrong with PM in the correct application, however if you put any trash through the pump, it can break the gears, where a billet gear will probably chip a tooth and pass it through.
I haven't seen a PM one in awhile but, it sure is nice of companies being forced to upsell you if you question their old stock having the PM gears or not. I understand that there are rising costs of manufacture; but I also know that investing in the powdered metal dies is NOT cheap at all and takes tens of thousands of pieces to amortize the cost in a reasonable timeframe
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