I need to find a place that does great alignment and balancing near Gainesville, VA.

Issues: Purchased some Goodyear Eagle F1's from Gainesville Goodyear, had them do an alignment and balance. Very slight shimmy and all 4 tires cupped badly after 5k. They replaced the tires with some Pilot Sport A/S Plus's, but I still have a slight shimmy and car is pulling to the right. They said alignment is in spec and balance is fine. This is on my 2k7 G35 Sport.

Nissan Quest Minivan: I replace the PAX system with aftermarket rims and Michelin Hydroedge tires. Tires have less 3k on them and are severely feathered on the outside tread. Quest was aligned and balanced twice. The 2nd time I took it in for alignment they said it was in spec. Quest still shimmy's even after 2nd balance.