well i have done it once (saved.. distance travelled, wheelsize data and time of day.. cancelled av speed top speed and time of last journery) but dont know how I did it and every time I try to do it again either nothing or lose all data. Holding both in definatly clears all, even if as pat suggested hold one and then the other after a few seconds... I think HLab has it but just need to work out which screen to be on when I press the buttons! every time i get it wrong it clears so have to put it on the bike and spin wheel to get new data! by the way this is my first racign bike with skinny tires and thin valve. I have a hand pump which works but I only seem to get it to 40psi i think should be 100, and a double barrel foot pump with a brass adaptor which is useless (or Iam).. I seem to bend the end of valve and get no where, any experience on what is best?