Railing wall causes gable wall roof projections

[ownerbuilder]

Thankx again for the help. The first picture showd the gable wall for the deck protruding through the roof. The second picture shows the railing projecting beyond the exterior wall of the house. The third picture shows when the railing wall is selected a second wall appears with the movement handles on it. This second wall image protudes into the house exterior wall even though the actual railing wall above ends at the outside of the exterior wall. The wall image used to size the wall snaps to the center of the exterior wall everytime I try to retract the railing wall then reattach it to the extrior house wall but, the sizing image always snaps to the center of the exterior wall.