Baled around 300 today (I didn't check the counter when we quit). I still had problems, although this time it was the right side wouldn't make a correct knot every so often. When I looked at the string one end had a knot partially formed and the other nothing. I adjusted twine tension and tweaked on the billhook tension some. My guess is I'll end up replacing yet another cam gear. I'm also going to get the gear the drives (rotates) the billhooks if I can. Seems like I have some slop there. 

The left knotter behaved itself most of the time, I think I had two knots on that side that failed. Once I set the tension tighter on the hook it did ok. There seems to be less slop between the gear on the billhook and the cam gear, but then the cam gear on the left is new.

I did notice that the knots hang up in the crook or curve of the knife arm (as in picture above) until enough of  a new bale has pushed in to pull them off. I found that odd, on my NH baler the knots don't &quot;hang&quot; like this. Makes me question what the knife arms should look like. The ones I have are not green, they are grey/white. Maybe they aren't for an oliver baler, they were on it when I purchased it though. Anybody have a good picture?