I have a CicloSport CM414 which worked great for a long time. Suddenly one morning at a Triathlon it wasn't reading speed, gradient or ride time. It was fine the day before. I have tried adjusting the sensor, wetting the magnet, making sure the actual computer is clicked in all the way and nothing has worked, anyone have any suggestions? The time of day, feet per hour climbed(gradient stays at 1%) and temp. all still work.