Not all shops or technicians created equal !
the shop that I bought the tires mounted, balanced and aligned the wheels/tires, were decent. At lease I was happy for a year until I took the new mag wheels to swapped out the tires and balanced on the new wheels.
needless to say, same shop, different technician have different results. Reason I went for this same shop because Costco do not carry the tires size of the stock rims, 14”.
I took the car to Costco for balance. The technician was cautious as he didn’t want to mess up the “classic” car as there’s no place to jack up the car. I had to convince him the location where he can put the lifters in. However, he still hesitated and the manager need to approve. Manager didn’t want it either and insist to lift the car at the frame rails… fortunately, I did reenforce the frame rails so I ageed.
Low and behold, 90 minutes pass and it’s done. Drove the car home, though short distance and NO VIBRATION at all. I will have to do more driving tomorrow to confirm the result, but so far I'm happy with the result.
stay tune folks