it will take more than two weeks for that silver to burn in. but it's worth it. get an old trashed record and run it continuous for 24 hours and see if you hear a change. 24 hours is not too much to lose on a cartridge life span.
actually you could get an old cart and run in the wire that way for a continuous week.
actually you could get an old cart and run in the wire that way for a continuous week.