If you have a spare 440 laying around,pull the intermediate shaft out of it and grind all of the teeth off of it. Wash it good, and use that for a priming tool.You will also need to make a tool with an end that fits the slot in the shaft, to use in the drill. I needed to do the same years ago, and just sawed the handle off of a straight screwdriver to use in the drill. Good luck.