The only settings that would control this are
dim_text_gap: ratio to text height that sets distance between dim line and value.
draw_arrow_length: length of dim arrow >
dim_leader_length: sets leader extension when arrows are outside
The other thing to check is your drawing units make sure metric values are not being set in inches. Setting dim gap to 0 or.01 should fix issue I've tested arrow length and seen arrows overlapping while pointing outwards. If the text gap isn't small enough the arrows will be flipped.
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