My husband and I just removed the plaster and lathe from our living and dining rooms. We want to reinstall the original trim around the windows and doors. the problem is the drywall is much thinner than the plaster and lathe was and if we hang it on the existing window frames we'll have a 1/2 inch gap between the drywall and the trim. Not a desireable look. How do we hang the trim and eliminate the gap without trying to cut down the window frames? (his suggestion...) I dont want to risk comprimising the frames or breaking a window.