Any good speedo shop should be able to adjust your speedo for you. Just determine how far off it is & let the shop know. If you don't have a speedo shop close by there are several that advertise in Hemmings Motor News.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.