@Faerywren - LOL! Thanks, I think! I will try pouring at 140-145 degrees, and with non-heated glass jars. Yes, they are always the same FO, and the same color. I will pay closer attention to the position of the jars as to which frosts and which one doesn't. I wondered about that too, but it seemed such a miniscule point, I thought, "nah, that can't be it!" But...maybe it is! :rolleyes2 Thanks for the answers so far! Keep them coming!