Thanks so much for posting this. I am a happy owner of both Atlas Lambda SL and Atlas Lambda Mono (Joe Harley talked me into it ). These are great, great cartridges and I have saved this information you posted for future reference.
I keep my records cleaned with a Degritter II and use SPT before every listening session. I use the provided carbon brush to wipe the stylus after every record.
These cartridges sound so fantastic. I love playing my records, new and old. I also have a DV XV-1s but haven't used it in a while.