Why wait till it's gummed up? And there is a good probability that there is stuff there that you can't see even with your microscope.
That's been beaten to death so many time on so many forums.
Just to keep the pot stirred, did you also know that you shouldn't play a given track on a record twice in succession because of groove deformation from the diamond being dragged thru the plastic? You see, there's this little spec. called the "modulus of elasticity" for vinyl...
That's been beaten to death so many time on so many forums.