I swear in an older version I could choose all sorts of wall types in the tools pallet under a "walls" tab. There was also a "doors" tab and "windows" tab. Now I see none of these and am choosing the wall tool from the Build section of the ribbon menu. From there I can choose a style in properties with 8-10 style options. The closest I can see are stud-4 and stud-6, but each of these measure out to exactly 4" and 6" (not 3.5, 5.5). I have made my own custom style to 5.5" but still dont know how to make it include the drywall line.

Hoping someone else knows more about wall styles. Thanks!