steering vibration v6 manual coupe
 

Hey everybody. Newb here. Just picked up a 2010 accord coupe v6, manual. Having some significant steering vibration at highway speeds. LOVE the car, but this issue is putting a huge negative mark on ownership. Had into the dealership twice in first week. Balanced tires, TWICE, rotated front to back, and alignment been done....still no change!! Next step is getting another v6 in, and swapping all four wheels with mine, and/or, taking the other car for a ride to check for prob.
Any insight, experience out there with this problem?? I understand it has been out there since 08, though Honda is shruggin the shoulders????

thx all!