Need help, please: infinite menu hiccup

Updated

So, I’ve tried to solve this, by outputting the variables to dynamic boxes, and find out where the coordinates are going. My problem is - when I scale the piece to 200%, The x position of the menu doesn’t change - so, it scales, but doesn’t provide a handle to manage the looping mechanism. Anyone know how I could have it detect, or handle the scaling change?

I’ve attached the files (.fla and .swf)