Hi everyone, thank you very much for your answers. I spent three hours last night restarting my alignement from scratch, spent the day at work and tonight at hospital which left me no possibility to answer on audiogon.
Jonathan Carr has asked me to send the cart back to Japan so we’ll see.
I do the alignment myself as the only guys in my area who could do it do not actually believe in precise alignment of the cart...
It is on an SME IV tonearm and I clean between every side, first with a thin brush and then with some Lyra SPT. I have heard the distortion on brand new records and also some mint records from the eighties. Didn’t bother try on 60s or 70s records which are too worn out anyway.
I’ll keep you posted!