[hcoles]

Thanks for many chipping in on the "stop" question.
I had good progress today - got the driver seat front motor switch installed and finally working in the right direction. Putting the switch in is pretty easy after you figure out the 4 pin connector can be taken apart. The seat is in.
While I had the seat upside down and on the bench I took a look at what was happening with the slides while they are approaching max. travel in either direction. When the slide is back (seat forward) the balls come very close to escaping except for a small bump in the slide sheet metal.
As we know - losing balls is not good. I figure the stop is there to stop the seat a bit early while traveling forward to reduce the risk of losing balls. So I think, as a couple have said here and diagrams support, the stop goes in the front.

On the issue of seat belt anchor I found the other spring washer so I installed two spring washers and the thin fiber washer (per PET diagram) and the friction/etc. seems to be fine.

Now I'm futsing with getting the rails installed in the correct holes.

All in all, making good progress and didn't break anything that I know of.