Thank you Sugar Bear for the response. I must admit I don't fully understand the way the tensioner works. I am handy and have rebuilt an engine before, but that was many years ago and not a Mercedes. I do have a manual and do a lot of research on the computer too. I have been very successful in removing the head. As always, I am trying to do the best job and be thorough. I do have the chain suspended. I also have cleaned the tops to 1 & 6 to some degree but will do some more to bet them cleaner.
Any advice and guidance will be appreciated.