Advice about Rolex USA Service Estimate GMT II 16760

[niconyc]

Hello TRF,

I have a GMT II that deserves more love than it gets, and dropped it to the NYC Rolex center this week.

They recommend the following

~ Factory movt service prese prf bzl insert & tube.
~ Case Frame 16760 S/ST
~ Case back S/ST

I would love your advice as to what I can expect returned, ie, how much of my watch will remain after a service like this?

Thanks TRF!