Thanks to all of you. Now I will send the pix I should have taken in the first place. Here they are:
http://share.shutterfly.com/share/r...80031ecd658bfd733&sid=8AZOGLNu0bMmRP
I think I have the correct switch, and I did mount it correctly. I tried an ohmmeter, and the lever arm has to be almost level before it cuts off.

So, I looked for the obvious - maybe the pedal is too far from the firewall. I redid the master cylinder adjustment to bring it closer, but then the bottom end bangs on the steel flange beteen toe plate and firewall, especially when I remove the bumper. Even with max adjustment at the threaded turnbuckle, I could not get the switch to cut off.

Once again, thanks for your help. Maybe the pix raise some thoughts?