At a party recently, a guest went outside my front door and closed it behind her, and then couldn't get back in. Hilarity ensued, we took apart the door knob, and discovered that a plastic piece inside the mechanism had shattered.

The next day, I went to my local hardware store to get a replacement keyed entry set, bought one, and brought it home. It wasn't until then that I realized that it was designed for either a 2-3/4 or 2-1/2" offset, and my original door knob was installed for some reason with a 5" offset.

I've searched the internet to no avail. If 5" offset door knobs exist, they're impossible to find as far as I can tell.

Anyone know whether I'm stuck, and if not where I might find a 5" offset door knob set?