What do you mean by double checking my valve set? Do you mean by checking my valve lash on the rocker arms?
We are have to start thinking outside of the box at this point and looking in other directions here. To be honest, I don't know, but it's something to check since it was apart.
Ok sweet. Will do. Out of curiosity, is there anyway that I could be adjusted the valves backwards. As in backwards, I mean like Maybe I got the TDC wrong for the 1&6 cylinders?
Anything is possible. The dampener may have been remove before and installed without lining up the dowel pin which will throw off your TDC marking. You can always double check you are adjusting the right cylinder by watching for valve overlap on the mating cylinder, like #1 intake and exhaust are overlapping, you know both valves should be closed for #6 and so on.
So I wanted to give an update on this thread so I don't leave people hanging... I ended sending this tractor out to the dealer to have them look at it. It came back that there wasn't sufficient compression coming from a couple of cylinders. So they removed the head and found that the cylinders were "washed" and they needed to do an in-frame job on it. It was an older tractor for our company so it was put out of service and the work was never done. Thanks for the help HeavyD!