I have a problem where I need to join a stacked wall and roof in a gable end. When I click the attach wall button, then click the roof i want the top of the wall to attach to, it doesn't only attach the top wall within the stacked wall, but it also attaches the bottom wall within the stacked wall. I get the error "Highlighted walls are attached to, but miss, the highlighted targets"... and the only option is to either detach targets for cancel the operation. I have attached a snip of before and after the wall attach to the roof. The only way to get the wall to "join" to the roof and look correct is to modify the profile, but I want to figure out what is preventing me from doing it the right way. Please help, thank you.