It seems odd to me that once I place a dimension, then alter text or add a symbol, that the arrow moves to compensate for the extra text or symbol. Does it not make more sense to keep the arrow where I placed it and just adjust the text? 

To dimension the arc on the end of a slot, I pick the arc, then pick on the screen where I want the end of my arrow. Then if I decide to show diameter instead of radius it moves the arrow to place the diameter symbol. Then I have to re-adjust my arrow back to where I originally place it. 

How do I get the arrow to stay and just add text?

TIA