Cool! I gave up on mine or at least for now. Doing it no different than you except using heat gun. My heads look same as yours before I bake. I’ve tried all types of colors from white to orange to green chartreuse and more with same results every time. I’ve even heated at over 400 degrees. Minimal separation of crinkle. Mine had never dripped or started to drip even over 400 degrees. Can’t call it. Maybe try a different crinkle color than silver. Maybe mine is bad batch.