[Bannon]

Thanks again to all for the replies. I am either going to try a local shop who says they can calibrate Smiths. Or do something with Nissonger. It is interesting to me that this is the second speedo. (The previous owner was able to get the replacement speedo set to the same mileage as the old one.)
The speedo in my first Superformance was balls on accurate (For you My Cousin Vinny fans) and I drove the wheels off of it 2200 miles in 5 months.

Will send an update when I have time to get it addressed.

JB