Dear Brucedan: IMHO Ortofon is a first rate manufacturer second to none.
I own or owned any single top Ortofon cartridge model ( LOMC/MM ). Well, several years ago I bought their MC 3000 ( LOMC ) cartridge that came with a full ceramic body. I received the cartridge and mounted in the tonearm, the ceramic body was really fragile and I put a screw headshell mount torque to high and the top plate on the cartridge was broke but for many months I was unaware of that till I changed of tonearm.
This was easily 7-8 months latter, I contact Ortofon and sended the cartridge as they asked and 10 days after a NEW MC3000 appear at my " door " with no before Ortofon questions about.
As I said: first rate customer service!!!!!!
Btw, great performer your A-90.
Regards and enjoy the music,
Raul.