Yes, I agree.. lap times can become a very heated conversation at times.. I would certainly not like to be the guy who made the racer go slower...!!! >:( haha.. then you would see some fast laps as I left the building!! Lol.
But you should first confirm that your Arduino really does have a resonator instead of a crystal.
If anyone reading this can shed any light on this.. please do otherwise I will try and get an answer from Arduino or someone else as soon as I can.
Thanx again to Robert and Codey for all your time and help. Really appreciated. 