Fix Family Not Aligning With Host Wall

Group all elements, then dimension from the group to the reference wall face @ 0'-0" and lock it. Worked for me so far, we will see if this awakens other Revit gremlins.

ISSUE:
I was having problems with a family that contained multiple modeled elements and a nested family within it.
It was not aligning with the finish face of the wall that was hosting it. (It was appearing embedded in the wall.)
On further research I read a recommendation to align and lock one main element to the reference wall face then align or dimension and lock the other elements to that main element. I tried this and had issues with this method, the family was not able to be created and it would delete itself on attempt of placement. I believe I was over constraining the Family.

A helpful and simple description of reference planes which indirectly applies to this topic:
http://architects-desktop.blogspot.com/2012/03/revit-when-is-reference-not-reference.html

Join a Split Wall

How to join two ends of in-line parallel walls. Double click one of the shape handles.  Make sure that the wall ends allow joins (check by right clicking each shape handle).

http://forums.augi.com/showthread.php?11927-Join-a-Split-Wall
(you may not be able to see the link without signing in)

Update: This only works some of the time so far. Other solution is to extend one wall and delete the other.

Storefront Repeating Mullion Spacing

Place storefront with equal mullions. Select desired storefront wall. Before placing, edit type, set vertical (horizontal too if needed) mullion spacing to desired distance (fixed, minimum or maximum), place storefront wall.

To edit/change mullion layout, select the Curtain Wall that you just placed, Edit Type from the Properties dialog. Change vertical mullion spacing to None.

Revit offers to automatically delete the grids and mullions in a warning popup after you click OK from the Edit Type properties box. Selecting "Delete Gridline" deletes the grid and associated mullion, selecting "OK" leaves them in place but makes them editable. Edit away!


Note: Don't forget Edit type effects all instances of that Curtain Wall in the project, not just the one that you originally selected.