Time for service (again)

[cerbom]

I have a GMT and it was serviced about 10 years ago (if I remember correctly). This will now be sent for it s second service of it s life. The winding spring must have come loose as there is no tension when winding. So it s due anyway for a 20+ year old watch. It was never a daily worn watch. I was told 15 weeks due to holidays and centers closing for 2 weeks. Last time I told them not to polish. Do you think it s wise to let them clean it up a little this time? Other than that it was working fine and very clean.