AeroPod, PowerPod and Newton

I have a client who uses a PowerTap meter and sometimes when I jsut want to take a quick look at a particular workout it would be more convenient for me to just open one of her files up with the iBike software. However, even though they're also Excel CSV files I'm not able to open the PowerTap files...

Re: "you can silicon glue the magnet in place in the pedal spindle"
That is totally SICK! I am so gonna try that!

Which seems to work better for folks - cadence sensor mounted on top of the chainstay or on the underside? Personally, I think putting it underneath the chainstay looks a little less doofy, but would switch to on top of the chainstay if anyone's had better results that way. Thanks!