Draw an extension line(s) to extend the leading landing(s) to the desired position next to dimension text.Select the dimension(s) that you want to modify.Type in the New Dimension Gap calculated above.At prompt to "Enter dimension variable name to override.Type DIMSCALE to find current scale if needed. Divide the total length by 3 times the dimension scale (New Dimension Gap = Total Length/(3 x Dimension Scale).Determine the total length for the leader landing and text gap that you want.So after more analysis and experimentation on my end, here is the less elegant work around: Override the dimension gap for a given dimension and draw an extension to the leader landing. So that to me is not a good solution, and not worth posting. The only way I found to get around the reversion is to explode the dimension after modification. After modification, if I select a grip on the dimension, modify a dimension property through the Properties window, or open the drawing with RECOVER the dimension leader landing reverts back to the style defaults. While the original application is able to modify the dimension leader landing and text gap length independently, the change is only temporary. Unfortunately the original LISP application did not fully work out after more testing and analysis. There are lots of settings, but as in your case maybe not the exact one you are seeking. Actually, it seems to be quite complicated. The exercise turned out to be an opportunity to learn more about some of the features and limitations of AutoLISP programming, dimension variables, and the AutoCAD entity database. It just took a while to really check out the limitations and possibilities. No, I didn't forget about trying to put together an application to modify dimension leader landings.