How to adjust diameter dimension string?

Hello. I am working with diamter dimensions, and the dimension string is not displaying the way i need it. I would like the string/ ext. line to extend outside of the circle and attach to the diamter number. Currently the line extends inside the circle but does not extend out to the diameter number. Ive tried finding the adjustment options in DIMSTYLE but I cannot seem to find the the option to adjust. Please help.

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