Baler knotter question.

I recently purchased a New Holland 273 baler and I have a small issue I want to fix. The right knotter ties great, and leaves a tail on the knot about an inch long. The left knotter ties fine, but the tail on the knot is only 1/4" or less long, and sometimes the knot pulls apart on leaving the chamber. From what I found online, the adjustment I need to make is to loosen the twine disc tension to allow the twine to slip through when the duckbill ties the knot. The knives are brand new, and are both adjusted to be perfectly in line with each other. I can't see any other differences in the knotters. I have to slightly adjust the timing on the left twine disc as well because the twine doesn't sit perfectly in the grove all the time. Some times it sits on the edge of the groove and is half in and half out. Other times it falls where it should be. The disc seems to be about 1/16-3/32 counter clockwise compared to the right knotter. I've never had a baler with the Deering style knotters, so this is a bit new for me. My previous balers all had the McCormick knotters, so I need to relearn the adjustments.