Step #9 When using a jig saw tape the entire face of the NavPod with blue tape to prevent marring of the surface. Also use a HIGH quality jig saw such as a Bosch. While I'm as big a fan of cheap tools as anyone this is NO PLACE for a cheap jig saw.
I would not ever consider using my Ryobi (pictured on right) to perform this task as it is far from accurate. Poor quality tools can make or break a project.