Foggy: I was just happy to get the machine and did not know what to look for nor did I even look over the thing when I picked it up. Lesson learned: do some research and ask questions before jumping into the lake. I was a newby to no-till and was anxious to try it. Heck, I planted a whole field without engaging the drive wheel, talk about stupid.
As far as the trunnions are concerned, all of them were trash, in pieces, and had to be replaced. I did not think preplacing them would solve my problem, but I just finished planting some wheat and winter peas and the press wheels tracked directly over the furrow covering the seed. The Land Pride guy I have been dealing with was just as surprised as I was that the trunnions fixed the problem.
I do not think turning too tight destroyed the trunnions. The trunnions are made from some sort of hard rubber. They are hollow with an open cavity at the top. My idea is that water got into the cavity when I pressure washed the machine before storing it. If the water froze during the winter, it could have cracked the trunnions and destroyed them. In the future after I pressure wash the machine, I will blow out the trunnion cavities to get the water out.