I have two blades damaged on a 4 blade 23" prop. The tips curled under and some sections broke off. The damage is all less than 1/2" from the ends. The boat yard said to replace it and the prop guy couldn't do anything. We just finished a list of fixes, so adding another $2000 for a prop hurts. Question: I know props are engineered to match, but if I file edges down smooth making two of the blades less than 1/2" shorter, will the problem be minor or major? I run between 5-7 knots, so if it's a matter of not moving as much water some extra rpm's aren't a big deal. But if it would result in some kind of vibration or wiggle that could cause other damage then obviously it's not worth it. Thank you.