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The pressure is not a big deal, too much flow is. I think it's supposed to be a 1mm restrictor. Easy to find on ebay. A mig welding tip works well, as does a small rivet.
Found half the problem the oil feed line fitting was bad. Oil was leaking out of the back of the crimp once the engine got warm! Also need a restrictor, didn't get a chance yesterday.
ive had issues with oil leaks from these 3 piece oil drain fittings, went with a 1 piece (fitting with just a metal pipe on it to slip on a rubber hose) and no more oil drain leaks.