Video what happen>> http://screencast.com/t/RVH9sgnoJN
I send this here too ,i hope to get help,and answer..

In this video with two stop, and then hold depressions feed, after which the start,
Why it starts to turn the A-axis.
There is not any command to the A-axis.
Kai

Not sure if this has anything to do with it, but at about the time the A axis starts moving, the code has lower case or small letter z in it as apposed to an upper case Z.
Line 224, then again at 230, which is when the A axis starts to move.
I'm no expert in reading or creating code so I don't know what effect that has on axis movement.