So I bit the prop into the cement driveway today, and when I was trying to take the prop nut off (I have one of those Aluminum Vortex spinners)....it wouldn't come off...to take it off I would grab a prop blade...and then try to wrench off the prop nut, but I end up just turning over the engine....like it's not unscrewing off....I could probably describe the problem better if needed...any help on how to get it off again would be great...