[Bigsauce]

I had planned on decarbonizing the cylinder head on my 105 and have finally gotten around to doing it. While my engine now runs fairly well and doesn't die off anymore, I noticed that it was getting excessively hot and was vibrating the whole tractor, enough so that I could see bolts vibrating and spinning and the hood would vibrate along with the grill. I started taking apart the head and noticed that the cooling fins on the head and on the cylinder were pretty clogged up with debris(Curious as to whether this may have been the cause of the overheating). My next observation once I got the head off was holy moly there is a LOT of carbon built up on the cylinder head and valves! All of this carbon seemed fresh, it must have been since my new spark plug was coated with thick carbon. I also noticed the head gasket was leaking a bit of oil on one side. I'm in the process of cleaning the carbon off still and plan to pull the valves, clean them, and lap them before putting the head back on. It seems like the intake valve isn't seating properly, and that the exhaust valve has a bunch of crud on it in the breather box. Finally I also took apart the breather valve and noticed that it was thoroughly soaked with oil. I plan on resuming cleaning it tomorrow and probably putting it back together on late sunday if I have the time. Any thoughts, advice or tips are welcome. I was hoping to get some input on what else to do while I have it apart.