Hiya Fatta.... I'm glad ya were able to explain the "types A & B rating" (no C or D!) 'cause I recognize I know next to nothing about it. Plus it was over 3 years ago that I was rated, and frankly, I was pretty out of it that day... typical Parkie brain fog in addition to a three hour freeway drive in very heavy traffic. Thanks for posting the correct information.. Barb Mallut [log in to unmask]