Having problems with this dynamic block with constraints

[guitarguy1685]

I created a dynamic block for a detail magnification symbol.

 

Attachment

Anno_DetlMag.dwg

 

It consists of a circle at the origin, another circle away. There are two tangent lines connecting them.

 

A couple of issues.

 

1. If I drag the circle on the right the Diameter grips don't go stretch with it initially. I stretch or modify the diameter the grips snap back into place. weird.
    
   
2. when I stretch the circle at the origin it displaced my circle at the end away from the polar stretch point.
   

 

I've tried a few different methods but no success. Maybe someone here can take a look and tell me what I'm doing wrong.

[iconeo]

I'll look tomorrow at work

 

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