I made the new Timken pinion bearing in my installation kit into a set-up bearing. I achieved what I thought was a pretty decent pattern. Then I installed a brand new identical bearing for final assembly. Well, the new pattern is way too deep (I think). Now I have more work to do. I will say this: This is my first gear set-up and the set-up bearing allowed me to quickly get some experience moving the pattern around. However, I did NOT get lucky when I replaced it with the final assem. bearing. This is the usual 8.5" 10-bolt, new 2.93 AAM gears. Am I on the right track?