This posting caught my eye and I hope nobody minds if I piggyback and ask the same question about eastern and central VA. There doesn't seem to be much interest in this area.
Don't know how far you would want to travel, but there is a good show in Roanoke. Never been to it, but several of the builders from there attend the annual Carolina Kustom Modelers show in Winston-Salem, NC - also another good show. I have heard of some shows in the DelMarVa area, but am not familiar with any of them. Hope this helps a little bit.