Wow. $$$$. Good thing you have a parts baler. (I have a NH68 baler for back up should the Oliver fail me.) I paid around $250 for the cam gear, but it came painted Hesston red. I don't recall the amount for my billhooks and knives. I know there has been alot of markup recently on AGCO parts. I couldn't believe the price of paint I bought but had to have. 

Anyhow, thanks for answering my question. Guess your having &quot;wear&quot; issues of a different kind with different results. My original problem was the knot would be swept off, then the hook would clamp back down on the &quot;tails&quot; of the knot and hang it up until either it the string would pull off (out of the hook) or break the string.

I've attached a couple of pictures of what was happening. The gears that turn the billhooks on my baler look to be ok, although there is some slop.

I've got a few acres down today that hopefully won't catch the rain chance Sunday morning. Half of what I cut should dry fairly quick. Wasn't that thick. If all goes well I'll have the Oliver baler in the field late Sunday afternoon for a trial.