Using a brand new Venu 2, and all updates installed, the HR readings in Cardio Mode are between 30 and 50 BPM too high at nearly all times. I am using a Polar H10 to do the comparison. What is wrong with Cardio Mode? This does not happen in the other programs I have tried, e.g. Elliptical, Walking, Pilates and Yoga. I am doing a straight steady state cardio workout. Can this be fixed with a software update? Thank you.