I am a fairly new user, so I don't know what is "normal" for the CW. My machine has recently started to simply abort back to the "1) Project menu" mid-project. The cut motor stops and the z-truck stays where it was last cutting (does not home). I thought maybe the bit was dull, so changed to new carving bit. Then, after another stall, thought maybe had to do with hard wood (red oak) so changed project to "optimal" from best... no joy. This is becoming somewhat tedious. If I am lucky, it gets through an element in the project that I can delete in the original mpc so I don't have to cut over areas already carved (and hope the starting point error is not too great) but always I have to start the project over from the beginning. Any wisdom or advice?