I asked because of the copyright, don't want to step on toes....

The bug I found was in the line about "v= (abdXR.value" etc I added .value () to the "waistXR) so it read  v = (abdXR.Value() + chestXR.Value() + waistXR.value()) / 3.0 . the rest of the stuff I found was my own fumble-fingered typing.
The clipboard and microsoft paranoia wouldn't let me post the script from the clipboard with the correct formatting so the file is attached as "G2 spread params".
Looks like Python is very similiar to Microsoft VB so maybe I can get into it.
Thank you for a great script.