Walls won't touch ground

[lawndart]

I'm using L&D Designer 7.04a - I have a problem: I'm adding new walls to my design, but the new walls won't touch the ground!

They hover there about a foot or so above the terrain - all the walls and structures I've made in the past are fine...

...where's the feature to lower the new walls to touch the ground?

And how do you adjust the height on free-standing walls?


Thanks for any tips

lawndart