Sorry, I posted then went out to work on the car, but scattered showers prevented me from looking closer at this. I have discs front and rear (GM metric discs in front with '97 Camaro discs in rear). The MC is under the floor with a residual valve in each line as well as a proportioning valve in the rear line.

Louey - the pedal isn't really low, but pumping does seem to build some pressure.

I'll probably start by bleeding and also try and do a better job bleeding the master cylinder since I don't have good equipment to do that. I will try bleeding the switch too and hopefully that will fix it, but I won't be back on it for a couple weeks. Next time I'll probably get a mechanical switch. The guy at Speedway reminded me I need the switch when I was ordering all my brake parts and thinking back a mechanical switch seems more reliable. Thanks guys.