If only I had listened. Was very happy with how the addmate turned out...fired nicely and matches pretty well. Everything's good, except the two tiny cracks in the posterior.Or, the cracks of death. Not only having a low fusing on the bridge, but now having to run it up high enough to heal the high temp porc and over baking the low fusing porc.
The overglazed Addmate can be hand polished down, after you try a healing firing.