Just cut all my bars. I wanted 1 3/8" but I have a crappy table saw and ended up with some bars being 1 3/8" on the ends and 1 5/16" in the middle. A few are 1 1/4" in places. (Don't ask). I tested them out and while there are a few gaps of 1/16" and a couple that are 1/8" none of them are very long and nowhere near all the way across.
Anyway, nothing smaller than 1 1/4". I will have small cell bees that have been this way for generations.
Is this a big deal?