Hello, I am looking for some guidance as what to do next. My previous post explained the issue I was having getting the tractor to start. I have determined the problem is deeper, but how deep I do not know. The compression I am showing with the glow plug adapter is 290, 200, and 290. The tractor is a 23:1 compression ratio, so 338 psi. Could this be the valves, head gasket, or cylinders? I dont want to tear it apart, if I dont have the kit to renew it. There are not any rebuilt engines available, except in Holland of all places. The head kit is $200+, a head kit with re-ring kit is $600+, and the full kit is $1,100 to $1500, including pistons. Trying to figure out the next step. I took of the valve cover the valves are functioning, but very dirty, push rods, and rockers look great. Where do I go from here?