Ben-If there is mottling - i.e. visual imperfections from the laminated process, it might introduce vertical noise which a stereo cartridge would pick up - makes an under-water sounding distortion. By dubbing with a stereo cartridge, better results would be achieved by dubbing at 33 1/3. This would give the tone-arm time to move up and down with the vertical motion - reducing the "underwater" effect. If the mottling is pronounced, then a true mono cartridge such as VR-II would be a better choice. As far as stylus size goes, almost all Columbias use a 3 mil - I don't believe a 2.5 would be used that early. I expect the records would have been issued in the mid to late twenties - which might mean that the speed will be non-standard . It seems to be the third set by the Lener Quartet so earlier rather than later. American Columbia recordings are usually 75 RPM from around 1925 to mid 1928. Of course , when you tune the speed to C Major, that will be obvious. Hope this is some help - Mickey Clark Mickey Clark 710 Westminster Avenue West Penticton BC Canada 250-462-7881 V2A 1K8 http://mcproductions.ca 1-250-462-7881 -----Original Message----- From: 6295LARGE Sent: Wednesday, January 16, 2019 11:36 AM To: [log in to unmask] Subject: [ARSCLIST] Which size and configuration stylus is best? Greetings, Can someone please tell me which stylus size and configuration is best for transferring Columbia 78s set M-8 (QUARTET IN C MAJOR, Op. 465 (Mozart), Lener String Quartet, Set M-8? PLEASE RESPOND TO *[log in to unmask] <[log in to unmask]>* Thank you. Ben Roth