Hello, many thanks for the replies. I will check to see if the suggestions resolve the issue.
Both my machines are MK II. Both my machine outputs work fine when sent directly to the speakers and those cables are unbalanced. The output from the MD Thru the MM is the issue, so I wonder if the cables could be the issue.
Thanks and I will let you know the outcome. Anyone else with any suggestions, no matter how trivial, they are more than welcome. : )