I fitted two five lever mortise locks on the front door of a friend who lives 130 miles from me, one a sashlock and one a deadlock, both by ERA and keyed alike.

I now find that she no longer trusts someone with whom she left a key for emergencies and doesn't want to claim the key back from them and anyway she can't be totally sure they've not made a copy.

I've been pondering the options - if there were any decent locksmiths nearby I'd take both locks there and get them to swap the levers round but there aren't so it's either new locks or maybe add a third lock?

Anyone got any better ideas?