We also have a 2100XC. It does indeed make many strange noises, but nothing that sounds blatantly bad, like metal scraping metal. Early on, a few calls to Westland Sales helped me to understand the new normal.
Suggest you call Westland for tech support. Their customer service is great, and their techs very knowledgeable.
John & Diane, fulltiming since '12 02 DS40, FL, Cat, '04 Element NHSO RVM103
John, Diane, and Lincoln, the guard cat. RVM103
Fulltimers since June 2012
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element