8 3/4” carrier bearing preload

So I’m putting a spool in my 8 3/4” and was just reading up since it’s been awhile. I’ve set up 3-4 carriers in the past so pretty comfortable doing it. My question pertains to carrier bearing preload, IIRC I have used 90lbs of torque to set preload on the bearings, but just read about using case stretch between the bearing caps to set the preload. Is one way better than the other?
Thanks