What can happen if a new rack is installed and wasn't tightened according to the torque specs.? The original rack lasted 250k. I'm getting ready to replace rack again for the 3rd time in about a year. The first replacement rack we sent back as defective, now having rack problems again, (clunking, creaking, excessive play in tires and eating up my front tires). It's not likely to get two defective racks, I thinking maybe mechanic may have defective brain.