I have Veeder Root 101 that is doing something interesting. Whatever price is set, it computes double. I set it at 10 cents a gallon, it rings up 20 cents for one gallon. Now, I'm familiar with when gas went to $1.00 that stations would set the cents to half and say "price per half gallon" and double the price for the total. This is the first one I've seen where the price is actual and the total is doubled. Some flaw, or is this a gear kit or something?