I was doing a 2 1/2hr cut today and it did everything perfectly until it got to the final cut out of the design which was a gothic window frame. When the y axis is deep at like 27-28” the x axis movement became very erratic and went off path and stopped in one spot. Stopped the cut and jogged the machine out to where it was having problems. So when I get out to 27-28” deep and try moving left or right it’s jolting back and forth like I’m hitting a brick wall. Then move it in shallower, like mid project and all is well left to right movement. Any ideas what can be going on? Had the xcarve for 4yrs now