I have a Vinyl Warehouse R31 cutter that I have been using for a few years now and have always had issues. at times I attempt to cut something and what starts to cut is nothing like the artwork being sent. it will attempt to cut but just keep the blade down and draw lines all over wasting the material. I am assuming this is not the most high tech cutter but there are times that it works flawlessly. Can anyone shed some light on what my issues may be? when it was new and did this i was told the usb cable could be the issue. I tried 5 different cables tonight and none made a difference. Thank you in advance