I'm new to Home Designer Suite and drawing an existing timber frame home for a remodel and addition. I don't understand where the 12 5/8" floor structure (L) I'm seeing on the Room/Structure edit panel is coming from and why it can't be changed. Help documents say it is shown for reference and can't be changed there, but I haven't found it anywhere in defaults either. I have existing floors supported by beams which are an 1 1/2" thick so the 'floor structure' is an 1 1/2" thick (or 9 1/2" with the beams which I would prefer to draw separately). Seems simple in theory but everything I try ends up changing the 'floor height above' to an incorrect value and puts 12 5/8" between floor and ceiling.