When i push the clutch in fast, like im racing down the quarter, my pedal hits a brick wall and i cant pull outta gear. when i push in easy its fine. i noticed a sensor on the clutch pedal looks like its threaded, and its nearly out. Is this my problem? Clutch fluid is fine, clutch is relatively new, and oh yeah the trans was replaced from a junkyard thanks to my warranty company and the blown diff.