Okay so this might be a good thread to ask -- does anyone use Tattler canning lids? If so, what tips do you have for making the darn things seal reliably? I've canned for years with the normal "Ball" canning lids and almost never have seal failures, but I have a tough time getting the Tattlers to seal reliably. Very annoying to work for hours to prep and can produce and then have 2-3 seal failures. I'm missing something important, despite having read all I can about proper procedure. Grrrrrrrr.