I'm attempting to replace a 70s era lockset on the original entrydoor on my 1924 American Foursquare. The lockset I want to remove doesn't seem to be a standard size and the holes that were drilled in the door to accommodate it are very large. The escutcheon on the new lockset I have to replace it doesn't cover up the huge holes completely. Since the outside of the door is painted, I could cover the holes with a dutchman and redrill for the new set, but inside the door still has it's original finish and looks to be a dark warm chestnut; so I don't think a dutchman would be a good choice here. I've been looking around to see if I can find a large brass plate I could use to cover the holes and then mount the lockset on top of that and haven't had any luck, but I'm wondering if anyone else has any ideas. Note that I would rather not try and find a different lockset yet, as the new one I got was free so the project has a low pricetag at the moment and I'd like to keep it that way.
Any thoughts on insulating the holes too, since I think it's a source of a draft from the door.
Thanks for any help.