I can't turn it down.

Can anyone suggest a fix?

Obviously, replacing the radio would work but I'm trying to keep the car as original as possible.

Just tending to the minor things while I'm waiting on my next batch of parts/tools...

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1974 240D "Boldie" 170K.- New timing chain/freshly rebuilt IP/replaced valve seals/injectors/upgraded stereo/new Bilsteins with Yokohamas/fresh paint and rocker panels plus lots of welds.