I just completed a full maintenance routine on my Ranger. All new fluids everywhere, greased everything, and pulled the secondary clutch and brake cleanered and brillowed both the primary and secondary (I didn't pull the primary). Got it out for a test ride and after a bit I noticed the take off felt lacking a little but thought it was in my head, then just shortly after that I couldn't exceed 30mph, the motor would just wind up and nothing would happen. So I limped back to the garage and pulled the clutch\belt cover and the thing is loaded with very black oil (guessing it mixed with the belt dust when it was spinning). Did I just blow a seal? How hard is that seal to replace?