Yes I had a plumber check the unit last week and he could find nothing wrong. There seems to be no blockage as liquids disperse very freely. There is no sign at all of rust. It just seems that the waste material is not being cut small enough to disperse
The plumber thought it was operating OK with no blockage. The only thing he thought was that the blades may be blunt and not cutting the waste small enough for it to disperse. Is that possible and can the blades be sharpened. Is the anything inside the unit that could cause it to run slower that it Should?
I have to go out for about 90 minutes and will reply to your response once I return.