[ceph-users] Very uneven OSD utilization

Hello, I am running a nautilus cluster with 5 OSD nodes/90 disks that is exclusively used for S3. My disks are identical, but utilization ranges from 9% to 82%, and I am starting to get backfill_toofull errors even though I have only used 150TB out of 650TB of data. - Other than manually crush reweighting OSDs, is there any other option for me ? - what would cause this uneven distribution? Is there some documentation on how to track down what's going on? output of 'ceph osd df" is at https://pastebin.com/17HWFR12 Thank you!