RE: Ambriod quarts/gallons?
Twice I used larger than tube size: First was when a club member was given a gallon by a factory that had no need for it. He had us bring containers to a meeting and divied it up. The second was a pint (or perhaps quart?) from my LHS. Both occurrences in the nineteen fifties. In both cases, most of the cement hardened in the container. I used only tubes after that.
George (I'll stick with tubes [&o] )