Years ago I had Special Ts do one for me, and then had Jules do another. The exterior parts of both finished handles turned out excellent, but the one Jules did, he restored all the interior components like springs, whereas the one Special Ts did, the springs and such still were sort of grimy.
Nothing you could see once installed, so didn’t bother me much.
You could try Special Ts and if the inside components matter to you, ask if he’d restore them too.