On the interior I prefer to cut full width jambs and make mouldings to match the rooms. (I cut the flooring freehand on the table saw to fit around the preexisting jamb/mouldings)
It’s best to assume that pre-hung door jambs are always going to be tricky. Even though I own the router accessories for doing the hinge plates myself, I switched over to prehung six or seven years ago. For the door I just hung three weeks ago, I decided that I didn’t want to go with the...
Bumping this for the guy that left the voicemail at my shop a couple of days ago. If this is your only problem, you don’t need a rebuild; you just need patience.😉
I have a few ‘survivor’ cores with the original yellow zinc plating still in good condition. It might be worth rebuilding one of them for this project.😉