Okay so I got a US Cutter MH 871 a couple months ago and I have had this very persistent problem. I use my cutter with an HP Touchsmart tx2 laptop and I use the usb cord. I have had to replace my usb cord SEVERAL times because it does this thing where it just stops cutting in the middle of a job and then it gets worse and worse until it just wont cut anymore, so then i go buy another cord. Does anyone know why this happens? and is there a way I can utilize the other cords instead of the usb?