Let me just say that as an employee of Firestone Eastland, our service manager has left this week to become the new store manager over there on main street. However this does not change the talent or knowledge of the diagnostic techs. I would have to think in a situation as you described with the balancer being broke, either a crank sensor code would have been kicked or something would have led to it. As for the fuel filter, we base our times off of Mitchel, as any other shop does, and for the price if you knew much about how businesses are ran you dont make a profit selling the parts for what you buy them for. I'm not saying this is ethical, just how business is conducted in 95% of all places. Every firestone cannot be the same quality, but I can promise at our store, Eastland, you cars wil be diagnosed correctly.