K301 burning oil

[Alvy]

Hello all, I had completely rebuilt my k301 out of my 127 for a bad knock which turned out to be a bad rod journal/crank journal. I had the crank ground and am using a .010 under rod. Replaced piston, rings, valves, all gaskets, seals, etc. while i was in there. I mic'd the cylinder and components when I had it all torn apart, old piston was standard piston/ standard bore, still some cross hatch left too. Long story short, since the rebuild, it burns oil bad, constantly, never clears up and smokes cold and hot. I staggered the rings and all the normal stuff, checked ring gaps, torqued everything per the manual, etc. I read that somewhere if the breather is not put together right this might happen due to the little valves in there on the plates. Took the breather all apart today and cleaned and inspected the order and still no dice. Can you guys think of anything I'm over looking? The engine knocked like crazy before the tear down but never smoked. Would the wrong oil do this or should I just bite the bullet and look at the rings to see if by some chance something happened to them or if im by chance put any of the rings in upside down would it cause this? It runs perfect just smokes bad and I'm really bummed because I thought it would go away. I'm seeing oil everywhere around the head and head bolts which i think is coming from the exhaust joints and inside of muffler is covered. I'm a little embarrassed because that this is the way It is now but I just need to get it figured out because the rest of the tractor came out really well. Thanks in advance. BTW no worries in thinking about even the simplest thing that it could be I'm open to any and all advice on this one.