I just got this bridge today. It is a Tonepros System 2 in gold. The saddles aren't adjusted or filed at all. In fact if I tried to put a string no matter what size on any of the saddles there is no way it would fit. So I am pretty sure that they need to be filed so that the strings can fit onto them? (I have not yet put the bridge on) If so I am looking for help on how I can do this, and what tool/tools I might need. Help Please. Thank you.
i would probably say 400 at a safe maximum. you could potentially end up with scratches with anything grittier than that. make sure to sand it wet if you do. i would highly recommend using a feeler guage for getting the correct diameter.