Amazing scope but elevation is limited on ar - Leupold Mark 5HD 3.6-18x44 Rifle Scope, 35mm Tube, First Focal Plane

This is my first adjustable, long-range scope. I did tons of research before picking this scope and reticle. The military's selection of it for the DMR helped. It's mounted to a 5.56 AR with 18" barrel using the Leupold Mark AR Mount, Matte Black, 35mm, 177096. I roughly sighted in using the barrel and then a laser. Fine tuned it at the range. Couple of things to note that concerned me at first but seem to be normal. When it arrived, I could not adjust the elevation the full range. It stopped before getting to the third rotation. Support showed me how to take the cap off and fix that. However, I should have left it alone because on a AR, with the mounting height, it was hitting too low at 100 yards. So after adjusting and moving the cap to zero, I ended up right back where I started. This is something Leupold should mention when noting the huge elevation range this has.