...Now we have a useful product. My replacement rulers came today and are spot on for accuracy and are not destroying my blades.
I've been going back and forth (in a very nice way) with Mark from the company and am glad to be able to report this.
Anyone else having trouble, please advise them. I'm told only a very few people have had a problem.
Anyway, end of subject.
All of you in the clutches of the Big Storm of Ought-eleven, my deepest sympathies!