Well i was battling the idle demons again and i was running down the check list when i put my hand on the dizzy cap and could hear and feel the rotor scrubbing the points on the inside if the cap. So i turned off the car and popped the cap off. I grabed the rotor itself and gave it a good wiggle and there in more than a little play in the shaft the rotor sits on. Dumb question i know but, is this normal? What could it cause? The car seems to run strong other than a rough idle from time to time that shakes the car.