I used that Pam and Tim Worthington glaze for a long time when I was doing earthenware. I never had any trouble with it crawling. What I like about Ger Bor is that it doesn't settle out of a glaze like Fritt does. Also it helps the surface to stay hard. Could be your bisque temp, Tyler. I bisque to Cone 07-06. Never had any problem with glaze fit.
I like my snow melted under a palm tree on the sand in the tropics with fish swimming in the gin clear water
No snow here yet -it did get into the uper 30's and has been raining every day now as we are up to 11 inches since September.
Now for well know folks from Canada how about-
I really like Alberta slip and my black glaze is mostly made from it now that I'm down to less than two bags of Albany slip.
I often ask myself why I live here. Because it's cold outside, I get a lot of work done in the studio. When the weather is beautiful in the summer, we all go to the beach. The last one out of the city has to remember to turn out the lights.