Sometimes in Revit, I just can't get the walls to automatically join properly -- especially where I have 3-way intersections of different types of walls. That's when Revit helpfully tells me that this intersection has over 50 different combinations, and wouldn't it be better if I just started over? (Many of you have probably figured this out already, so if you have, kindly skip on to the next tip and read no further, please.)
So I zoom in reeeal tight to the intersection, grab the blue handle of the offending wall, and pull it out till it just barely touches the surface of the other walls. Yes, there's a gap left that weather will penetrate. But that's what sealant is for, right?