Am running a sag 4 bolt metric box ported and connected to a ram - high volume pump and reservoir with no fill opening - mini truck reservoir up on the fender. Doesn't want to turn to the left anymore - and when you shut it down it boils over with foamy fluid. Obviously has air getting in somewhere - but absolutely no sign of any leaks. I did run this sideways on several occasions for extended periods of time (not so much that I didn't have oil pressure) but enough that maybe the reservoir system fragged and something went dry? I've done this before - but the damage wasn't as bad - shipped the gear and pump off to PSC and had them rebuilt and it worked fine again. Thinking I need to do that again - and purchase the better PSC reservoir.......but would appreciate a little input as to maybe how to learn how to diagnose these issues a little better?