All of the door jambs are very solid oak so it's seems a waste to replace with prehung doors. Also, the luan doors all work perfectly, so they are hung correctly.
I thought it would be a snap to simply make the new door exactly like the old one. So I laid the old and new doors on top of one another and they appeared to be exactly the same size, except for height. I cut the bottom off to size, carefully marked, measured and cut out the hinge mortises and door knob hole. When I hung the door it was apparently a millimeter or so too wide. It struck the jamb very slightly before it would close. I used an electric planer to shave off some of the door on the knob side. Now it closes but binds on the hinge side. It seems I may have made the hinge mortises too deep, so the hinge is sunk a bit below the surface. I'm thinking I need to shim beneath the hinge to bring it level with the door surface, but then I'll probably need to shave some more from the other side. This bothers me because I thought the old and new door were the same width to begin with, so maybe I'm doing something wrong if I need to keep planing it down.
Any tips or references to practical guides would be appreciated. The websites I can find seem to gloss over the tiny details that seem crucial for obtaining a good result.