I just bought a roland stika 15inch cutter, set it up, and I cant get a good cut out of it... All too light, even on the test piece of vinyl... I also adjusted the blade, and it should be cutting through the backing paper! that blade is sticking way out of the blade holder! At the moment, it is cutting lines in my vinyl, but not deep enough... I was looking for downforce setting ect... (but there isnt one with a stika)