Can I file this down with a file/dremel or should I look into a couple of those solas 16/23 impellers or I’ve seen that SBT does OEM remans for about $100?
That's not bad at all. Just clean it up and you are good. The leading edge should be sharp-ish... but you dont' have to remove the divots. So, don't try to grind it back to s "Clean" edge.