Hi gthirteen. Maybe not the nearest to you, but recommended by many customers in US. There is a small company in UK (Scotland) which offers great re-wiring service, but also cleaning and other upgrade of modern tonearms. You can always consider: https://www.thevinylsource.co.uk/tonearms-service
I live in UK, so my postage to get this service is a bit lower. You decide. They can always answer your questions and advise, if you write using their contact form on website. My issue with tonearm wiring they solved with a great outcome.