I have a 86 mustang gt 5.0 converteted to edelbrock carb with a 5 speed tranny. Noticed oil drip from block plate/inspection plate coming from block side. It would only drip while running and only every few seconds. So I removed tranny, clutch, flywheel, to see the rear main seal didn't appear to be leaking? so I changed it out with new one any way. I used felpro one piece. Also noticed lots of oil on oil pan near rear so I went ahead and got the 4 piece cork/ rubber set and installed it. Then I went ahead and changed valve cover gaskets. Then installed new flywheel and used black rtv on all bolts. New clutch kit and remounted tranny. Now I started car let it run till normal operating temp and not a single drop for the whole 30 mins it ran. Shut it down reinspected and everything was great not a drop of oil anywhere. Next day I let it run for a hr still no drops. Today I start it and ten minutes in it starts to drip again from front of block plate every 3-5 seconds? Now when I got the car it was leaking this away and also noticed that it has a pvc valve on passenger side valve cover that runs to carb and a chrome breather cap on driver side? Isn't it supposed to be one or other setup only? Would this cause me issues?