Man, TYC headlights are a ***** to open. They didn't use butyl tape, it's like a black adhesive liquid. I melt it with the heat gun and it immediately oozes back together around my flat head and reseals. I broke all the tabs and scratched the hell out of the lens around the seal.
5 hours of work on ONE headlight, and I probably won't get it open until after another half hour.