Yes, the cleaning and stuff done may do that. However, it is more likely that the mechanic adjusted your idle to what he or Suzuki believe it should be at. I know that when I had mine in for the water pump problem that the mechanic even adjusted my throttle just to be thorough...
If it bugs you then put it down a bit but if not, just leave it. Also, if you are going to adjust it, do it after riding or when it's up to a good running temp!
aka Gas Man
Was: 2002 Kaw ZX-9R
is me till the