Shearing the key is not a common problem, but it does happen. Unfortunately, there is no way to tell the size and length of the key without pulling the prop. BTW, the keystock will be square, not curved as mentioned previously. You can buy a range of keystock pieces to have on hand (not expensive) and have a hacksaw and file close by to make any modifications necessary.
Last edited by Fstbttms; 07-10-2008 at 03:31 AM.