I am having a problem removing old kiln wash from a mold with small ovals on it. I used my regular kiln wash (Bullseye shelf primer) - should I have used something diferrent for a small details mold? Or, should I put a fresh coat of kiln wash on after each firing, (hopefully, never having to remove it). Can anyone suggest how to do this without wrecking the mold? (It would also be difficult to clean my pot molds - how does everyone else do theirs?) Thanks for your help. K