Part 2 discusses cone placement configurations that can be used to mount wheels to the balancer. Then discussion about calibrating the balancer. Note: Had to add .25oz. weight to a previously balanced wheel. Why? See residual unbalance discussion of this wheel in Part 1. Outside residual unbalance was .21oz. .21oz is closer to .25oz. than 0oz. Therefore the balancer sensed this. On the 1st run, residual unbalance .21oz was less than .25oz therefore no further weight was required. This tells me balancer accuracy is +/- .25oz. Go to Part 3 to complete the calibration video.