Heard noise coming from the spindle, pulled the cover, and the spring on top of the drawbar was loose. I tightened it back down, and heard an air leak in the back of the machine, so I replaced the air line coupler (elbow) under the pressure regulator. Now when I apply air to the machine, the drawbar comes down, if I push the "tool in/out" button, the drawbar goes up (backwards from how it should be). Any ideas?