I have attached a picture, This shows the opening we have for the stairway and directly above is where the truss meets the floor, You can see from this angle however that the truss is connected to the binder and not a supporting wall underneath which is the same for all 4 trusses, So my point in making supports within the new loft area as per my diagram above going direct down to the binders is where I plan to put the new supports we want to put them directly over the internal walls fopr extra support so why is that not better than what is their at the moment?