A 14' 2X10 joist in a first floor ceiling sags about 1" causing a bulge in the ceiling and a depression in the floor of the room above. To repair it, I plan to remove some of the ceiling drywall and make several crosscuts in the joist. The number of cuts will depend on my ability to jack up the joist. Should the cuts go more than halfway thru the joist? Once the joist is straightened out, is it overkill to bolt on a steel plate (fitch?) or sufficient to nail/bolt on a 12' 2X10? Due to the geometry involved, I don't think it would be possible to replace the sagging joist. I'd be unable to get a new joist in position even after removing the crown molding.