Hi y'all. I need some help with a problem I'm having. I am remodeling a bedroom and bath. I installed the door casing leading into the bathroom and the casing is not wide enough to meet the dry wall. This is causing me to have about a 3/8" gap between casing and trim. Is there anything I can use as a filler or something I can do to fix the issue? The casing is for a standard door and the only thing I could think of was that standard now is not the same thing as standard in the 70's. I am new to the remodeling thing and am learning as I go so any suggestions would be helpful.