Hi, I don't have much experience working on balers. I have a Massey Ferguson Number 3. This spring in the knotter broke on me. It has a tab that inserts into the nut and the arm goes in to a piece that works with the twine to be worked inside the knotter. How to I put the new one in without breaking it? Is there a technique on how this goes back on? Please bear with me as I don't know part names. I will try to learn but it could be a bit to get my information across. Any help will be appreciated. I am going to try to get a manual, but I also need to finish haying this year.