First thing I would suggest is the CHF, Cheap Handling Fix. you can find it referenced
Here
It's fairly easy if you have the tools, and if not, shouldn't take a mechanic more than an hour to do it. The CHF helps with body roll, makes the coach more stable over bumps and thru dips and turns. Basically, it stiffens up the anti roll bar.
Sorry, I can't help you with a shop in your area.