Equipment parts source has kit for 21$ (A45387 i think) or entire aftermarket slave cylinder 30-50$ on ebay. I also bought parts from coleman equipment (self adjust mechanism). For not much more a new cylinder can be purchased if any questionable pitting etc might cause leak.
Concerning the parking brake. Are you able to adjust the brake by turning the end of the parking brake lever? My lever has been damaged and the end seems to be frozen stuck but appears as if it originally turned to allow for adjustment of the cable.
+nheninger from what I can see I don't have any leaks. master cylinders are full and iv bled the brakes but the don't work. pedal just goes to the floor. Doesn't build pressure if I pump it either.