I agree with Miriam. That's a lot of shellac to use on 2 machines. I have probably 70% of my can left after a lot of coats on 1 machine and a couple of coats on another. Make sure you give it a LOT of time to cure because it does sound like your coats were thicker than usual.
I've spent less time looking lately for machines but the near complete lack of 66s really surprises me. Lots of 201s, (1)27/(1)28s, some 15s, and a generous helping of featherweights and later machines seems to be the main choices that made it here.