Hey guys first time posting. I have K341 in a John Deere 300. I rebuilt this motor last year. It has ran great on the rebuild. I've mowed with it and tilled the garden this spring. I was mowing the other day and started getting smoke out of the breather. Stopped and started checking things. took the breather apart and checked that it was clear. no problems there. I checked compression and it is sitting between 110 and 120. thats where the service manual says it is supposed to be. I'm stumped as I have no loss of power and good compression. can't figure out why it is leaking oil out the breather and acting like it has positive pressure. Any help on this would be awesome!