Hobby shops in Memphis?

[dragenrider]

I'll be in Memphis next weekend for the GATS train show. In the past it's been fairly decent. Are there any outstanding, don't-miss-'em railroad hobby shops in Memphis? Directions would help, too.

Train nirvana, here I come! It's train show time!!!!!![:p][:p][:p][:p][:D][:D][:D]