pgcrawley First of all, the Petra Kaiser and Brenda Griffith books you have are great books. I still use mine for reference and inspiration when I have an artistic block. When I do my wall pockets, I always use two layers of glass on the top. It may not be necessary, but I think it gives a little more glass to spread around and fall, just be sure to make it large enough. Also, if you can, fire it on fiber board. This seems to help during the ramp time. As I said earlier, ramp slowly and also soak for longer periods of time when you are ramping up and down. Again, good luck!