Thanks John. Actually the mid panel is OK, it's the MR pot that is fried. It looks like a pretty generic pot, but I'll make sure I get a "genuine" VMPS pot as a replacement.
I fried a couple pots early in my VMPS days, by plugging a High Powered amp into a silly little Monster Power Center, and Clipping it for about 30 seconds on the "1812 Overature"
Actually the L-pads are almost like a speaker protection device, but they can be melted if you drive your speakers with a welding rig, like I was
Solder gun, and some hot glue, and your good to go.
Post Brian, he'll send you a replacement.