Hey folks! So have you guys had any luck doing speedo updates? The calculator tool looks very nifty but it doesn't seem to be working for me.

First off, when I dial in any tire size, the {H0104} value jumps from the original 2637.428850 to 1622.523953 regardless of the new tire size, so I'm immediately suspicious that I might be messing something up somewhere.

Using the Speedo Fine Tuning tab instead, the calculator updated {H0101} fine, but when I went to the Shift Point Correction sheet it didn't seem to be working right yet. It seemed that no matter what I entered, when I pressed "Apply" the percentage box went back to 0% and nothing had been changed. See here:

and then I would get an error:

Does anyone know how to get around this?

Thanks in advance!

- bret