I have an old Larson door with the original keyed lever deadbolt lock and latch(Larson part 305005, which is discontinued). I simply need to replace the inside latch. I don't so much care that the lock and key from the outside work. The inside latch made a crack or some sort of odd sound and would no longer work properly. I can't open the door from the inside without prying the thing over to the left with a small stick and it won't work from the outside either. It has rendered the front door useless. Would like to replace the inside latch only or whole lock and latch set if need be but would like to spare the door.