Adapter plate sounds like the way to go. You're lucky you have the ability to make one at work. Plus... there's the whole manly feeling you'll have once it's done. You can tell everyone you MADE it work!!
It seems like I always have a "work in progress" in my shop. I just finished up a rod rack for my rig. I was going to build a bump board next, but then opted to go the way Red did and just pulled out the sharpie and a speed square! When they say "permenant" marker... they're not kidding.