So....I have a brand new precision 3431 aka sc34 (t3/t4E) I have been debating what size oil feed to run and what restrictor if any. I have read all kinds of opinions about -3 or -4 line and restrictors. I called precision today and the guy who answer said -4 line NO RESTRICTOR! He said they need high volume of oil. I said, wont that blow out the seals? and he said no, not if you have a good return line set up. I want to trust what precision says, but I am a bit hesitant to think that it's ok to run a -4 with no restrictor. What do you guys think??