When riding the clutch arm vibrates up past the pin that engages the clutch and the arm swings inward. That crates slack in the cable and basically I cant pull in the clutch. I have to stop with it engaged, undo the cable from the arm, swing the arm out until the flat stop is parallel with the end of the pin so I can push it down and reconnect the cable. It's an endless cycle. Is there something that is maybe broke that i supposed to hold the arm/actuator down? It just recently started happening. What's wrong?