I was just out and jacked it up. The play seems to be gone, at least for now. I am still confused as to whether it is rubber or nylon. On the net tractor talk forum there is a guy who tore his machine down to see what was in there. That is where I heard it was rubber. The dealer had told me it was rubber as well. Yesterday he said nylon. I said to him "rubber or nylon" and he said "no, no it's nylon". From my understanding of what he told me, they put a spacer between the a-arm and the bushing on the pin to take away the play. I'm not sure if that's good or bad though. He said it was a steel washer the thickness to tighten it up. If that is in there spinning on the pin it is going to wear the bushing, whether it is rubber or nylon, at least I would think???
ETA: I think I am going to try pulling a pin out and see exactly what they did put in it. I'll try to do that sometime today.