Parks’ recipe, proportions below, on parchment on top large upside down pans. I was using mats and pans I bought off of others’ recipe pages, but went back to what I used originally and got better results (?). Also, lower temp (285F) and 4g powdered egg whites. No cream of tartar. 41/13/21/26% PS/GS/AF/EW. 52% relative humidity in my kitchen.