My 2002 K1200RS presently has 111,000mi. At 70.000 I had to replace the rear main seal, which my buddy and I did successfully. Last fall the transmission input shaft bearing went out so we replaced the bearing and the seal, again no issues until three weeks ago when my clutch started slipping and I noticed oil leaking from the seal where the transmission and bell housing join. We took it apart to change the disc but could not figure which seal was leaking, the new trans shaft seal or the rear main, so we replaced both while we were in there. A few days ago that seam started leaking again, but getting worse, so instead of frying a new clutch disc we tore it apart yesterday to find oil pouring out of the engine at the NEW main seal....WTH?? Back up a little I put UV-oil dye in the trans first...no detection from oil leak it was trans. Put the dye in the engine and the oil leak lit up green, definitely engine oil, but from a brand new rear main seal?? I changed the oil and filter and filled it to my regular 1/4" from top of the oil level glass and Oh Boy!! did the oil pour out of it then. When we split it apart yesterday there must have bee 1/2pint of oil in the bell housing, but luckily no clutch disc saturation. So trans seal is good, engine main seal and o-ring is new, and new main seal numbers match old main seal. So what the hell is it? My though is excessive crank case pressure forcing the oil out of the main seal. Maybe bad rings? Clogged distribution hose, which I replaced around 80,000mi? I am getting a lot of oil in the air-box like reversion issue. Today we will check my cylinder compression and maybe do a leakdown test of the top end. Any and all suggestions are greatly appreciated as always.