[Bob Andersen]

You're right - it does seem to jump to 1.7M about 2/3 through the travel. I'll leave it alone for now.

I finished with all the bakelite blocks and replaced a few out of spec resistors and micas along the way.
There is one junction of three resistors and a wire floating in space. That's correct as near as I can tell from the parts placement diagram.
It's right in the middle of the photo at the right end of the brown-black-green resistor. Maybe they just ran out of tie points ?
[Image: http://farm6.staticflickr.com/5325/72192...f1ac_z.jpg]

Now, on to the electrolytics. Here are the two 12 mfd replacement caps i found in the set. The originals would have been 6 mfd.
It would be cool to find a pair of the originals and restuff them For now, I'll just tack in a couple replacements to get it running.
[Image: http://farm8.staticflickr.com/7101/72192...6dde_z.jpg]