I noticed my trainmaster Cleveland express had a little bit of a "rattle" when I was changing bands today. This is my first "nice" watch and to be honest it's not like I shook it when I first got it to see if that was a normal sound. It never leaves my wrist and keeps good time. Just wondering if it needs service. I noticed the rotor wasn't completely smooth, but again, I cant comment on how different it was before. Is it normal to notice a little play and noise in the moving parts.