[Spridgets] re-ribcase tranny alignment

[Billy Zoom]

I had the same problem on my '53 Ford truck. I used a piece of an aluminum
sign as a shim. It was still working 21 years later when I sold the truck.

> You'll see that the slider gear
> comes all the way to the back of the box when it jams (which is caused by
> the three balls trying to pop out past the front edge of the 1/2 synchro
> slider.)  Now picture a large washer that slides onto the 1/2 shift shaft
> between the slider and the back of the box.  It will limit the rearward
> travel of the slide by the thickness of the washer.  No more jamming.