I have a 1996 Mighty Max 2WD, 2.4 liter. I've changed the oil pump seal 7 times now and it's still leaking, leaks approx. 1qt every 300 miles. I've used the repair sleeve on the oil pump gear but hasn't helped. Back pressure isn't an issue, any ideas? Would a bad balance shaft or oil pump cause this? I'm going to tae the timing belt co off today to watch for any wobbl while it's running. Thanks!!!