Thanks for all your advice. It seems to be a VTA problem. I am using a outrigger armboard, which unfortunately means my tonearm is higher than if it is flat mounted. I am getting a new armboard which allows me to drop the tonearm more to allow the bottom of my Spu to be parallel to the record.
I will post results later this week when new armboard arrives.
I will post results later this week when new armboard arrives.