Please help. I am a fairly new carvewright owner ( about 6 months) , havent had any issues with it and love the machine. I was carving a sign with just simple lettering and the carve shifted to the left about a quarter of an inch 15% into the carve. The machine didnt stop, it just kept carving. I cleaned the y rail and the z rail, checked the tension and everything else carvewright told me to try. Nothing works, every carve I do is shifting to the left, sometimes right away, other times half way through the project. Very frustrated. Thanks for any help or sugestions