Stupid question but got to ask. When loosing the belt tension for doing a pulley swap. I know you are suppose to use a 1/2 inch socket and push towards the driver side. But which side of the adjuster to you put your socket in ? One side has an idler pulley (right) attached and there is a hole there and on the other side (left) where the actual adjustment gauge is, there is a hole there too. And do you actually use a 1/2 inch socket or just a 1/2 inch ratchet.