I recently had to make some repairs to my knotter and really have got somthing screwed up. When the baler trips everything seems to rotate just fine but the needles don't move. After my repair I emptied everything out and rotated by hand to make sure everything was working ok and nothing was hitting, I think this is where I created the problem. I did not otherwise touch the needles. Any help pointing me in the right direction would be of great help, I have not worked on these in 20+ years