I know that bodies are not that expensive these days, and it may be cheaper than getting a service, but with a new one you're always at risk from 'new' problems. While I've done superficial services to an RB Pro S body (foam seals and foam around the mirror) I have had a couple of lenses sent off for a CLA, and it's made a world of difference. A good service makes them like new again. This stuff really was made well. I think my RB must be over twenty years old, and still working really really well. That's quite an achivement.