mr.garnica

So Im running an MH-871 probably a month old, i have a mac and SCALP software. It all looks like its running great except this little problem I've been dealing since i got it. Usually my first cut goes ok, sometimes it starts cutting perfect when all of a sudden the blade runs all the way to the end cutting all my vinyl . I have to restart it and re-set the file then it will cut flawlessly. When the job is done, and ill re-set the blade to the original point to re-cut the same file i go to my computer to do a re-cut and it just cuts random lines i made this video so you guys can see what im talking about... http://youtu.be/W5lFpxgjThQ