UPDATE - Light/Soft Bottoms

Hi Everybody,

Just wanted to drop a note to say thanks again to everyone who provided advice in this thread a few days ago.  I tried out some of the recommendations, and got a bottom crust I'm much happier with.  I've attached a photo of my new oven arrangement, as well as the nice toasty bottom of my latest bake (unfortunately I don't have any pictures of pre-rearrangement results, but trust me: they were white!).  Thanks everybody for the support!

oven - Copy.jpg

bottom - Copy.jpg