Print this and it'll fill up the M shaped hole on the front of your bot. Print a few in different colors and swap them around on a whim. Prints in no time at all.

The file is sized from the DXF body files, so it's a very exact fit. It's best if you shave it down a bit first. If you snap it into place without cleanup or without shaving it down at all, it will be stuck in there forever. You have been warned!