graphicssavvy

I'm switching from the questionable vinyl that came as a sample with my USCutter SC 801 plotter to Oracal 651 "intermediate" vinyl. Can anyone tell me what speed and pressure settings they use for this new vinyl I am going to try? I can feel that the 651 is much thicker than the sample stuff so I would like some suggestions just so I don't waste a ton of time and vinyl trying to figure it out myself.