Here is a set of Murdaugh BM cam gring lobes installed on a set of 48 -53 chief cam gears ready to ship to a customer. We cut off the original lones as shown in the bottom of PIC, then blanchard ground the surface flat to the gear, honed the lobe to fit the shaft snugly so we could set the timing on our fixture to pin the lobe to gear and then weld the pin and the lobe to gear to insure no flex