Didn't see a non-guitar related instrument thread so i hope this is the right place.

A long time ago I accidentally stepped on my micron and bent one of the knobs (lucky for me, the one knob that controls almost everything you do with the micron...). The metal piece that the actual (plastic) knob itself rests on is now completely gone. Here's a picture.

Uploaded with ImageShack.us

If anyone has experience fixing this sort of thing l would love some advice.
Open it up at the back, and get a part number off the pot/switch or whatever it is. Then get the exact same one and solder it in.