That looks like it’s set on the lowest adjustment as it’s set to A. The last hole looks like it’s marked E and that should be the longest draw adjustment.
Edit- To add I’m not sure if anything else would be needed to adjust it to 30” but I don’t think so.
Module in the pic says it’s a “3A”, that puts it at 28” on the #3. Each hole off of the “A” peg cable stop will move the draw length +1/2” going all the way out to “E” at 30”. The mods have to be changed along with cable stops to match.
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