After my various posts re Seamaster back from Brendan Hoey service, what is the concensus with regard to whether watches require a run-in period after service ?

My SMP was running around +12s p/d pre-service and, although have not properly checked, have a nasty feeling that it's now running slow, I daren't do a proper check just yet, was thinking of giving it a week of daily wear to see if it settles down.

Any opinions on this or first-hand experience of the Cal. 1120 SMP would be appreciated.

Gomers