I bought a new steering box with pitman arm and when I put the pitman arm on, the spline is tapered and I can only get it only partially. The arm is not on fully to get the locking washer on with all of the threads of the nut. When I talked to the place where I bought it, they told me that I might not be able to get all of the threads on if I use the locking washer. I can get about 50% of the thread, but it seems like not enough.
I'm thinking about grinding down part of the inside of the pitman arm so I can jam it further on the steering box tapered spline.
Has anyone encountered this? Any thoughts?