Malc you need the correct tools for the job mate - a decent 1/2 inch drive set for these bolts. Using 1/4 drive with adapters risks them snapping and you don't want that happening when you a have all your weight on it.
And as Ian said, torque wrenches should only be used to tighten nuts and bolts - they only go both ways so that you can tighten left hand threads.
