I learned a trick with new stamps. You take an eraser and rub the stamping side to get off any leftover oils/mold release agents from manufacturing process. They stamp better afterward.
Your acrylic blocks are so clean and nice! I don't know why mine is so cloudy. I tried to feel for some film to peel off and couldn't find any. Am I just missing it? Is there a film to peel off? Thanks for your thoughtful unboxing and your comments are always so good!