I am having problems, also. I did the recalculation and it corrected some of the data, but there are spikes all along the track line. I was using an XGPS150 for my GPS signal. Next time I will try to align everything as suggested in the quick help and be more careful about lining up the GPS unit wit...

I used a n XGPS160 for the first time with your lap timer and everything seemed to work OK except the g-gotce readings in the traction circle are centered to the left side of the circle Is there any way to correct this?

Thanks
CaptainDave