I can't seem to get the buildings to spawn above ground. I had it set to 2.5, then 1.0 and 1.25. Will try a higher number like 3.5 but don't think that is the issue. We created bases and copied them from ground level.

copy from eye level of the top of the foundation

Sorry for late response, had an admin try it and seemed to do the trick. Thanks for all your help!