One of the Mopar magazines did a rebuild of one & it did not appear to be complicated. Have you tried adjusting yours? You start with the steering wheel/front wheels straight ahead (box in car) or vertical shaft halfway in the middle of its' travel (box out of the car) & I dont remember the procedure exactly (see if you can locate it) but I think you adj the large ring till there is just zero play on the steering column shaft then adj the top slotted bolt down till it just makes contact then a skosh more then lock the locknut without moving the slotted bolt but do check on this. If you do rebuild yours get the 20:1 worm gear set from MP. A new/rebuild box ready to go will be pricey but I can say that going from an OE 24:1 to a 16:1 box on a circle burner was a night and day improvement