[torquepower]

If the pedal is not coming back all the way, it will hold the brakes on a little. The pedal has to be back all the way for the ports in the MC to open for fluild to return. Sometimes the spring in the MC can weaken and the weight of the pedal will hold the brakes on some.

If your calipers are all corroded and gungy they won't slide freely, take the pads out and put them back on with the pins and try moving then back and forth, it should be real easy. Lubricate the bushings with high temp grease and clean the caliper and spindle surfaces that come in contact with emery paper.

Also, problems in the combo/prop valve can cause this.

Hope these suggestions help, It could be a number of things, I would start with just checking that everthing moves freely first.