Originally Posted by todd_k
I take the pipe apart and pull out food that isn't really ground up.
A sure sign that some of the grinding elements have corroded and been beaten away, leaving wide gaps for food chunks to pass through
You may be able to see this by looking down into the grinding chamber with a flashlight
Wear is most likely at the edge of the turntable, adjacent to the swivel lugs.
In a new disposal there is almost no clearance (just a hair's-breadth) between the edge of the turntable and the wall of the grinding-chamber.
Time for a new disposal, this time one with stainless-steel grinding elements