I went thru the knotters on my old NH a couple of years ago. It has performed flawlessly. I always ran Goldcrest 9000 sisal twine and it never missed a knot. Last year I bought some sisal twine from NH and it too performed flawlessly and never missed a knot. I still had some of the NH twine when I started this season and I baled with it and did not have a problem. It was on a Sunday when I ran out so I picked up some twine from TSC. Bad mistake! 2 out of 5 bales wasn't tied and the twine diameter was all over the place. You could see it as it came out. Some places it was flat when it came out. So that Monday I went to the local Co-op and bought some Tytan 9000 sisal twine and that did help quite a bit but it still misses every once in a while. Usually if you make a round if you see one that is busted laying there in the round that you are baling if will bust one close to where one is busted in the previous row. That sounds like it is in the twine to me. I say that because if two busted bales are in close proximity to each other in different windrows that means the twine was in the same spot each time doesn't it? I've checked the knotters, sharpened the knives. When I went thru the I replaced the rollers on the knife arms, new bill hooks, and anything else that seemed worn or out of spec was replaced. Is anybody else having trouble from the twine?