I thought the tractor was in neutral ( both levers) but the engine died when I stood up. When I tried to restart it wouldn't turn over. Looking closer, I saw that the range lever wasn't truly in neutral. The outside shift arm is out of the shift lever notch and I can't get it to move back into alignment with the other arm or the notch. Any ideas? I tried rocking the tractor but no luck. Pulled it back to the barn with the clutch in.