I've been wearing my new PRS-18A almost full-time for a week now, and it is consistently ~15seconds/day fast. I would like to get it regulated.

I have heard about "running in" and am wondering if this really does happen. If so, when is the earliest you'd have a watch regulated after purchase from new?

Does anyone know someone in the Wrexham/Chester area that can regulate "on the spot"? A local jeweller has let me down re-sealing an old Seiko [given up after 3 months] so I'd like to try somewhere else.