I have been using an excello mill for many years to do maintenance work around the shop. I'm a carpenter full time but I do all the repair work at the shop. I noticed that when I try to tram the head, the adjusting shafts for both the side to side and front to rear adjustments seem to be stripped. In other words, when I turn the hex head bolts they don't turn the shaft which has the worm gear on the end, which makes the head move from side to side and front to rear. The shaft has a hex head that is called an adaptor. It is pinned to the shaft. I have taken the adaptor off and tried to see if there is something I could do to repair it. I haven't been successful yet. If someone could give me some help with this, I would be very grateful. What I do now to adjust the head, is turn the bolt and then push the head some with my hands, and watch the dial to see when it is good. It is so much more time consuming to do it this way. Thanks again for any help.