On transition lenses I've noticed that there is a tendency for me to get waves. Not all the time but too often. I use a Vista dry generator and was wondering if it was the heat generated from the generator that caused the waves. It isn't every time by any means but it is often enough to be agravating. I let the lens cool for at least a half hour after blocking. I would be grateful for any cures for this problem!
Thanks Tom
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