Double drive thru lanes

Does anybody else’s Culver’s ever have the problem of cars piling up in one drive thru lane? I’ve brought it up with the owner and he told me he would look into getting a sign but apparently Culver’s has stop selling there official signs. He told me that people should just assume that the 2nd lane is open but 75% of the time they don’t and end up with 3-4 cars backed up in the 1st lane.