Workshop: Bad Saddle Slot

Ohhhh man! Just when you think all you have to do is adjust the saddle and do a setup on a guitar that's already had oodles of work, you find out that the bridge was installed in the wrong place, too! And to boot? It's a 12-string!

The pencil line is where the front edge of the saddle needs to be. I've already filled the old saddle slot with ebony. Now to dice-n-slice this into submission...!