Autodesk Revit MEP

[#1]

I just found a issue with hood families that has me in a real pickle. Created and tested in MEP 2010, loading multiple familes results in the family that was loaded last to have geometry out of place and cannot be flexed. Loading a single hood has no issues at all.

Loading small hood last results in this:

Loading the large hood last results in this:

I am sure it has something to do with the nested family Riser Rect.rfa, but I have reloaded, re-aligned and still can't understand what is going on.