OK I just got a new computer and cannot get my LP24 to cut through a full 24" width. It gets about 1/2 way and then does random lines. I've come to the conclusion that is has something to do with the USB even though I never had this issue on my previous machine with the USB. I was thinking about using the serial since my new computer has the serial port. Are there any different drivers that I need to make this work with 7 or can I just pop in the serial cable between the computer and cutter, fire up Flexi and go?