Thanks for the suggestion. As it turns out, I ended up getting some oil slick paper after all. I found a 250 sheet box of the legal size for less than $50 shipped, which works for me. The legal size cut in half will be perfect for my press. I'll finish up my current project with normal parchment, but once the oil slick paper arrives, it will be the new tool.
10.3g of rosin today. All destined for MCT oil tincture.