I did the replacing fine, both 140 clocks.
But driving tonight i thought 30mph was very slow, so stuck tomtom on and tracked the speed and it was slow!
40 was 30MPH and 80 was 70MPH!
The dial rested at 0MPH fine and both the old black and new white dials seem to look identical (ie 6 0 is in the same place).
Any idea how or why this has happened and to recitfy it?
Im still using the main dash from my original black dials, just swapped the cards over. So its not like its using a different dash or anything.