I've got that rear kit in a 74 challenger, stock rebuilt m/c, gutted prop valve, stock front disks. Rear calipers are small so no rear valve needed. Maybe the fluid drained out from the master during install, and now the master needs bench bleeding.

What did you use for parking brake cables? I havent hooked up those yet.

Hey I got the same kit from summit and had the same problem. What I found was that one of the piston seals were pulling the piston back to far when releasing the pedal. It was pulling back .090 from the pad. The seal was some how twisted when it was assembled. Was in the same situation you have. After multiple phone calls and e-mails, Got the caliper replaced and works great.

I know, The bleeder is on the bottom in the picture but the directions and the tech support said to install this way. There is a bleeder in the banjo fitting on the line.

Thanks all, I have some family stuff to get back to but I will let everyone know what fixes it.