Yesterday I installed a Panoram bike computer from Trail Tech. I programed the unit setting the wheel circumference to 2205mm as recommended by Trail Tech. The unit kept showing I was going about 3x as fast and far as I was. I programed bike 1 and 2 the same. I checked it several times w/the same results. I did the install the unit exactly as the directions describe. I am I missing something? Has anyone had the same problem?