He said something like it would help to get the grease between the gears, but honestly I wish he had just left it alone completely. I'm sure they're fine from the factory. I brought the car in for an alignment - not for him to mess with it. He claims that he's been wrenching on Mopars since he was 16 years old when he had a '66 Valiant as his first car. He's got some Mopars on his lot and says he has a '65 Barracuda Formula S that he's gonna fix up soon, but I don't really trust him that much anymore. I have some QA1 adjustable strut rods that he doesn't seem to understand and bitches about, haha.