I am looking for an alternative to the arc length measurements for determining circumferential measurements between two points within a drawing.

I can easily determine one option using arc length, however I would like to flip the arc length to provide the shortest arc length between two points along the circumference. If this was a one off drawing I would draw an arc on the opposite side, however this is a drawing template, and the position of the fittings changes depending on configuration of the model.

If there was a circumferential running dimension that I could easily flip that would be even better, but it looks like only Angular Running Dimensions are available currently. I've used the angular running dimensions and then created a cross reference circumferential measurement table, but this is an extra step and I have to manually enter data.