I just had my bow retuned the other day because of this problem -- Centershot is right on with the laser, knock point reset and new D loop.
Just to reiterate BC....... If you want
YOUR bow perfectly tuned then
YOU must tune
YOUR bow. No one else can do it for you. Your pro shop can not get
YOUR bow tuned to
YOU, they can only get it tuned to them or the machine they are using.