I realized the other day my interval power averages don`t match values set (and executed) in wo setup. Looking closer at each lap in Strava, there is a timing fault that seems to build over each interval. Yesterday I deliberatly held power a bit longer to see if avg. got more accurate. This didn´t help much and e.g. interval/lap 32 is at 42:29 to 42:58. Analysis shows my effort is between 42:17 and 42:47 meaning I miss 11s from a 30s effort. Activity 1439517387