UML - Resizing connectors and tags

[EulerOperator]

Visio 2003 SP 2

I am creating UML Static Class diagrams. I want to resize or reposition the
cardinality indicators at the ends of a composite or associative connector.
Tried everything possible, but can't seem to do it.

In particular, I'd like to change the relative position of the cardinality
indicator for ALL connectors in a diagram. I can rotate them, but not
reposition.

The handles on the text indicating cardinality is 'grayed out' (protected).
I attempted to unlock these, but to no avail.

Any help or suggestions would be appreciated.

Thank You.

 

[Philippe C.]

As you don't mind suggestions :
I opened the Shapesheet and deleted all the "GUARD" functions in the
formulas. No good. I changed a couple of promising cells, to no avail.
I inserted a controls section in the shapesheet. But then it became too
complicated.
I also had a look at the shapesheet of the connector itself.