I recently moved and acquired a new cabinet to keep my pipe tobaccos and pipes in. While I was transferring the jars from box to cabinet I noticed that on many of my tobaccos stored in mason jars the lids which were sucked in had now popped up. I opened on to see what the damage was, but the seal seemed great and once I took the lid off the tobacco was in perfect condition. My question is does it matter if the dimple on the lid sucks down or not? I thought it did, but it doesn't seem to make a difference to me.