It was hitting the jamb on the bottom. The hinges seemed tight, so I just hit it with 40 grit sandpaper since it’s solid wood. Hit it with some sealant and it looks good as new.
I had to retighten the handle too. When I went to do the final test I was a little worried it the handle might not work correctly so I made sure I had my phone, my leatherman, and a bottle of water “just in case”.
I was surprised and very happy how well it came out.
Check to see that the door isn’t sagging on the hinges and getting the latch and striker misaligned. You may also notice that the door is hard to fully shut if it’s really off kilter.
If it is sagging, tighten the hinge screws, especially the ones going into the door frame. If those screws refuse to tighten, it means they have pulled the “threads” out of the wood. Fix this by removing one screw at a time, jamming some pieces of broken off toothpick into the hole, and then replacing the screw. The toothpick will make for new material for the screw to bite into.
Thanks! I will have to check this at some point!
If necessary (probably only if the door frame is old and damaged), you can also shim up the hinges with pieces of cardboard, cereal box, wood veneer. Whatever you need to do to get the door aligned in the door frame. The entire world is wedged together with shims.
There might be some adjustment on the striker plate in the door frame, too. That might require nudging, tightening, shimming, just like the door might.