Do I simply cap off the round duct work at the end or do I need to take off the complete branch (only register on this branch) and seal the opening at the main duct?

Thursday the rain stops , so I dig down and find the well ( its old style with a sanitary cap seal and its buried 2 feet down).

That is moisture penetrating the stucco from either not being sealed properly when first painted or the stucco cured to quick when first applied. 

All sealed off. 

all around the house it looks as though if need to be sealed to keep the water out.

If it is in the walls and we know what it may be (tobacco, pet, etc), we have a recipe (tsp, rinse, seal, paint)... or if it is from the floors, we clean or even pull the flooring (seal underneath refloor, etc)...One simple carpet one I use is sprinkling the large (13.5 lb)  bags of baking soda into the carpet (if carpeted)... work it into the floor with stiff broom, so it gets into carpet to pad.

Their "settlement" amounted to a peon with a notary seal coming to the house and pointing to lines and saying "sign here"...

Add in another $500 to get it sealed and let's keep praying we don't have to rip it out and put in concrete.Oh, we haven't even gotten to the painted shut, termite eaten wooden windows that don't operate have we?

anybody can sue anybody for anything,,,it even costs big bucks to defend the innocent.Besides all that,,, here,,, those houses need thin osb to seal the cracks in sheathing,housewrap and making the windows proper depth.HERE we can take off our own,which is a cool drizzly day job. 

Those are cheaper vinyl windows that the vinyl flexes and breaks the seal.