I know you have repeatedly said that MA "should" not need cross-polar flow to get snow, but did you really regularly get "workmanlike" snows with pac puke? Using the standard airmass type nomenclature (not sure who defines this) I would equate "pac puke" with "maritime polar", "domestic cold" with "continental polar" and cross-polar flow with "continental arctic". So before was a good bit of MA snow coming with mP airmasses?