success?

I successfully cut a second mat, but discovered that even that one, which appeared to be two inches longer than the other, is short by a quarter of an inch.  I guess AC Moore is not the ace to buy mats.  There was nothing readily available to measure them, and they were clearly labeled with (incorrect) measurements.

Not I have to decide whether to just use the one I''ve already printed which has flaw, or attempt to redo it so it is flaw free.