For the last 8 or 10 years my Garmins, (an 810 and two 1030s) have consistently shown my Calories and my KJs to be nearly exactly the same number. On June 26, they were exactly the same. My next ride was July 6 and the Calories number it substantially higher than the KJs number. I use a Shimano power meter. The new numbers are wrong. I know enough to know why the Calories and KJs should be nearly the same. What do I have to do to get back to having accurate data?