LEE!!! SCORE... I had been unable to find the 700B attenuator switch but I stumbled across an Ampex part (also made by Clarostat) number of 62-0040 with a BE-20 marking also on it (probably the Clarostat number). All you have to do is add the straight jumper across the 2 pins and it works. Pretty much the same exact dimensions too.
I did an eBay search on "Clarostat", went through Thousands of switches, saw this guy's ad, got lucky. I took a chance and ordered them. There were 5 in the pack.
Tired of using the old insulating shoulder washers on your input RCA's???? I ordered some of these from Online Components (http://www.onlinecomponents.com/switchcraft-s1078.html?p=12322537) and these are the correct ones and they fit like a dream. Here is a pic with one in the hole and one on the Switchcraft Jack. They fit the Nice Cardas RCA's I use in my builds too.
The have a bunch in stock but don't wait. I would rather use these than the cheesy colored plastic ones that come with the new jacks. As a matter of fact I use one of these S1078's under the red or white plastic ones so not only do you have great insulation, you can still see red or white for left or right.