I have a 37 Chevrolet 1/2 ton and the sector and worm gear seem to be worn out in the steering box. I thought that it was just the sector that was worn so I found a NOS sector shaft and was trying to get the box all back together and adjusted only when I get the play out of the steering in the centered position it gets very tight at the extreme ends of motion. I imagine that the worm is also worn more in the center then at the ends. So I have two thoughts, rebuild the stock box with a NOS sector (which I have) and worm (which I dont have and haven't been able to find) OR can I use a later Recirculating ball type from a slightly later truck in it's place? I saw a 40's box that looks like it may work. OR does anybody have any other Ideas? By the way this all was started because of a shimmy that I couldn't get rid of and the last thing to deal with was the play in the steering box. Thanx Jaysin