I realize this may be a dumb question but... Is there supposed to be a hump in the drivers side rear floorboard?

 

You mean, other than the center hump? Not sure I follow - mine does not, to my knowledge.

Do you mean on the floor where the rear passenger would place their feet?

 

Yes the actual footwell has a hump.

 

The steel is flat, however there is an air duct that runs under the front seats and exits through the carpet approximately at the back of the front seats. Could that be what you mean?

 

Well I removed the carpet to get a better look and the steel is warped or it has a bow almost as if it's been pushed up from the underside of the car however there is nothing under the car that would indicate that.
Basically I just wanted to know if that was supposed to be there or not.
Since its obviously not I'm thinking of taking a rubber mallet and putting it back in place. Any other suggestions would be great. I'll try to get some pictures uploaded today

 

Here is a photo of my XJR with the interior stripped out. This is looking toward the rear. The raised piece at the bottom of the photo is the support for the front seat.