Trick for polishing billhooks?

They were hanging up almost all the time and I used some fine sandpaper on the billhooks and cleaned them up and they're better now. Had a really hard time getting my hands in there to do a good job, though, and would like to do it better.

So, short of taking the knotters apart, is there some good way to polish the billhooks so the twine slips off easier?

thanks!
Tom

I have a NH 68 but I think yours may be simular.
There is one bolt that hold the knotter down.
Take this bolt out and you can raise the whole knotter up.
This gives you easy access to the bill hook.
You will also notice that the knife arm moves as you move the knotter frame. ( watch fingers)
The knife arm is what pushes the knott off the bill hook. Move it up and down a few times and observe the gap between the knife arm and the bill hook. I am not sure how big the gap should be ( my manual is out in the shop) but if its to large you can bend the knife arm to close the gap.
I have not had to do that yet. So cant help on how to adjust the knife arm.

Good luck.
Dick