Hey guys just bought a 2002 Pr4896 with some mileage on it and the machine will not cut accurately. It is all over the place. For example if I cut a piece 2" wide x 48" long in the Y direction part of the cut will be .125" off and part will be .0625" off. I am designing and making cut profiles in Aspire. I am plugging the cut profiles into ShopBot 3 I believe. Machine is constructed well and square. I have tried messing with the Unit Vales and still no change. Please help!!!! I am trying to use this machine to increase productivity of my business and it's just sitting there.