I have the us cutter 9x12 swing arm heat press that came in a bundle with the cameo 3. I am having a lot of problems setting the temp. I'm so confused bc I have no idea what PV & SV stand for. Is the pv number my temp or the sv number. When I set the temp the only number that changes is the sv but the pv has the Fahrenheit symbol next to it and it continues to get higher and higher after I set it. I'm ruining shirts & wasting htv. The instructions are no help