Recommendation for steam plumber in Woburn MA area

I know there are contractors listed elsewhere on the site but I want to hear from people that can recommend one from experience. We are remodeling a kitchen and the architect wants to move a pipe that goes to a radiator on the second floor. I'm afraid that even if the 100 year old pipes can be reworked that we will have a water hammer disaster remaining when we are done.

Thanks,
Harry