i want to check for a spun hub<br />i was toll to mark a line from the center of the hub all the way out to the metal part of the prop.<br />to see if it slips. does this mean to mark on the inside of the propeller on the propeller nut and along the inside of the propeller.also the blades are a little bumped up on the edges of the propeller,should i leave them like this or is it ok to take a file and smooth them. i plan on taking the boat out tommorrw to check the hub .