I have the this green template material for rhinestones. and I am trying to cut with what I tihnk is 60 degree blade. I have tired changing the pressure. Went from 80 to 100 140 to 40.pPlease explaine how the pressure work. I tried extending the blade . I am using winpcsign 2014. I have no problems with regular vinyl, but this material is much thicker. Please help?