Have you tried yelling at your cutter "NO! STOP! WHAT THE #$*#*$ ARE YOU DOING? DO YOU HAVE ANY #$** IDEA HOW MUCH THAT #$*&(* VINYL COSTS!?!?!?!? WHY ARE YOU CUTTING A #$*&(* DIAGONAL LINE THROUGH PERFECTLY GOOD #*$&* DECALS?!?!?!?!?! WHY ARE YOU (*#$(* DESTROYING YOUR OWN #*$&*# WORK?!?!?!?!?"?
Yeah, it didn't work for me either...
I upgraded to a Graphtec, haven't had to yell it at it yet...