Tire/gear Wizard problem

I am having a problem with the Tire and Gear Wizard No matter what size tire i put in the wizard it puts current at 20.12 with 3.23 gears. If I change the gear ratio in the wizard it changes the tire size. if I put 4.11 it changes the tire size to 26.5. My tire size is 26.5" but my gear ratio is 3.55:1. If i input 26.5" tire and 3.55:i gear ratio, i get current 22.11". Have I somehow added some kind of math to the wizard? If i did how can I get it back to default.

Thanks in advance