I recently purchased the Parkzone Spitfire Mk IIB for a family member. It has been crashed and the cowling has been cracked all to hell. I want to remove the prop so i can take the cowling off and make sure all the motor components are intact for its next flight. Well, i have taken the Nose cone tip off, and i see a completely round "nut" on the outside of the prop. I have tried unscrewing it with no success. I have even put a pair of pliers in behind the prop to hold the shaft and turn. No luck. So i ask, How do you remove the propeller from this airplane? Thanks for all your help.