I ordered a MonsterPower 32 brushless outrunner electric motor and a 14x7 APC "E" Propeller from nitroplanes.com. The MonsterPower 32 comes with a spinner, nut, and metal plate (like a washer) on the threaded metal shaft of the motor. I have a few questions:

1.) What order do I put these components on? Does the prop go on first and then the plate and nut?

2.) What is the thin shaft on the back of the motor with a slot for a collar on it used for?

3.) The prop I got doesn't seem to fit the motor. One side of the prop has a hole the right side, and the other side the whole is about half as big, so the prop won't fit on the shaft. Did I buy the wrong propeller, or do I have to make the hole bigger?

4.) How do I know which way to put the prop on? I do not know for sure which way is forwards (I assume its the side with the writing)