Hi guys I need some info please , I had to change my flywheel and did the clutch at the same time and ended up putting a 4 terrain clutch and flywheel kit in it , first thing I noticed when driving it was a little bit of vibration through the gear stick but was told that was ok , not long after was towing the tinney camping noticed spots of oil on the tail gate and after having a look there was oil drops where the tailshaft enters the gear box , took it back and they replaced the seal and a couple of weeks later it leaks again , anybody with any ideas could it now be the unis maybe cause there is more vibration now the dual mass flywheel is gone ,need help.