hollow core cut off
I've done it before, just cut it off but be carefull with the blade you use not to tear up and spinter the exterior surface which is very thin.. use masking tape over the outside, run your pencil line over the masking tape, cut thru the tape and door at the same time, will save the thin surface from splintering. the bottom filler is about 2" x 2" so if you cut more then that off the bottom will be hollow so just glue in the pice you cut off after you remove the thin facing. which may be glued and stapled on. or just cut another piece for it by ripping a 2x4 to size which is easier then trying to save the old piece. , go problem at all as long as you don't tear up the door or the finish.. while making your cut..