I am currently replacing the motor in my 400 and am going to replace the sealed bearing in the front PTO since the motor is out. I was wondering what opinions are on replacing the needle bearing in the back of the front axle pivot? How does it get lubricated? Is it packed like a wheel bearing? Also when putting the pivot back in the front axle (since I took it out) do you just load it up with grease? I don't see a place to grease it once it is put together. How often should that pivot get greased? Thanks for the help.