I cant tell you if one is different than another at this point. First step is to see what's in circulation.
If you want you can indicate IF you are having problems or not.
If there was a more elaborate way to conduct a survey I might have tried that. However we don't need to mix issues with lot numbers just yet.
If people keep posting we should see lot numbers change and we might figure what a lot number is.... At the moment I see some things I didn't expect but we don't have enough data yet to determine anything.