Arrow 1 points to the adjustment plate that positions the idler pulley. Arrow 2 indicates the position of the second small-drive pulley mounted on the jackshaft. Arrow 3 indicates the plate Candoff made out of scrap steel that mounts the jackshaft. He used sealed bearings for the jackshaft, so no lubrication is necessary. Arrow 4 indicates where the base of the Rockwell machine had to be modified to clear the first large-driven pulley.