MPSM Bed rewire cable chain

Uses the chain from the Remix source. Modified the grommet holder for the bed, and modified a chain piece to snap into a drilled hole on the back of the machine. I used a 3/8" drill bit and had to ream it out a bit.

*Edit 5-19-17: Heads up the newcomers, I will be uploading a "lift kit" for the MPSM this weekend that will include a back panel with the hole and chain mount, for a no drill options. You will need longer wires however for this.

*Edit 5-24-17: And here it is! https://www.thingiverse.com/thing:2335630