I have had the Delos for exactly one year and play it 2 hours a day
I guarantee you that if you haven’t cleaned it with Lyra SPT on the red stylus brush mentioned above you have build up on the back side of your stylus
The SPT cleaning solution has no solvent in its ingredients and is water based so
Little chance you will damage the bonding compound holding your diamond to the cantilever. I do a wet clean once a week
Also I recently quit using the Onzo stylus cleaner as well
wet cleaned the cantilever and stylus and the Delos has never sounded better
please let us know your progress
Good luck Willy-T