What is " bearing pre-load"?
I´ve never had any problem with grommet eating, I use surgical cloth tape.
My swashdrive 7 vibrates and sounds more than my 6. Weird thing, I´ve had another 6 and it sounded even more, aswell as my friends machines. There something special about my first swash 6, so quiet and smooth.. Made me think there was something wrong when i got another.