Talking with Banebots last week, the manufacturer, for proprietary reasons, will not make parts available. You will have to buy the whole transmission. This can be verified by contacting Banebots, if you wish. Banebots is not happy about that, and indicated to me that will be a concern for next year. You don't need CNC equipment to make the plates. You could use a mill that has DRO (digital readout), or an index head to locate the holes. Using the hardened plates with the double D eliminates the need to do this hole, which is usually cut with EDM, water jet, or laser, and you already have the plate to work with. You can look for a small machine shop in your area, or local vo-tech program, that might be willing to do the machining as a sponsor, gratis.---