Well I just saw on Ebay that the guy that makes the round gear out of brass and delrin is now making the sector gear also, out of brass and aluminum. $90 for the round gear and $91 for the sector gear. I just replaced my round gear with one from Marco and so far it is working. But if it goes again, I am thinking about buying both of these to hopefully eliminate ever having to do it again. I was hesitant before because I didn't think replacing the round one without having a metal sector gear to mesh up with it was good idea, just transferring the problem to the sector gear. Expensive, but if it eliminates them from ever breaking again, I am thinking probably the thing to do. Unless this now would put some type of strain on the motor? What does everybody else think?