Hydraulic clutch conversion, slave does not retract

[neongreen]

I'm converting a fox body t5 to hydraulic using a bracket and CNC brand slave cylinder.







I adjusted the rod so that it was snug to the fork and then depressed the clutch pedal, but the fork did not return to it's original spot. for the next 2-3 pedal depressions, the fork would move forward and not retract. after that, when depressing and releasing the pedal, the fork would move forward and retract. Why can I not get this fork (and TOB) to retract? I'm using a wilwood master cyl if that makes any difference. The TOB would slide smoothly on the input shaft sleeve prior to installation.