I have a few tins stashed, haven't cracked one yet. I get bit sometimes when the tobacco is on the wet side. Samuel Gawith Full Virginia Flake comes to mind, dried down to "dry to touch but still pliable" no problems. Any other tobacco bite you?
Some virginias bite me bad regardless of how slow I smoke. This tobacco was not wet like Gawith baccys are, I always let those dry before loading. FVF is another one that bites me.