alldaybekfast

So I absolutely love this house mod but I've had a problem with the upstairs, when building the house it doesn't let me put the roof on until I build the 2nd floor supports, but the supports get in the way of entering the bathroom under the stairs, and it adds the vanilla stairs and balcony, so in order for me to get to the library and other stuff upstairs I have to jump over the vanilla railing, and it makes other parts of the upstairs completely shut off, so if anyone could help me find a fix that'd be amazing, thanks!