Since updating to 3.20 yesterday, I have done 2x short treadmill runs (slow jogging really) , of approximately 18 and 16 minutes. My 235 has calculated the distance as 0.15 and 0.11km respectively. This is extremely annoying, as before the update I had the 66bpm issue but everything else was ok. Now the bpm problem is fixed, but I have this problem, as well as extreme battery drain - from 100% to 17% in about 27 hours. I am at a loss to know what to do. Is it possible to rollback the firmware or force a reload? Any other ideas would be appreciated...