My new tires on the front are wearing on the inside. I took the truck to NTB and they said the driver's side lower ball joint has movement and so no alignment can be done. The Haynes repair book isn't to good on the ball joints. Anyone done them themselves? What would be a good price to have them replaced? I called one shop I like for this type of stuff and he told me $235 per side to replace the lowers. What do you think?