weird issue, my backups used to be 40MB/sec to tape, and now, they are 10-15MB/sec.

The only thing I did, was move the tapes around in the changer, as the OCD in me, didn't like having tape 11 in slot 4, etc etc... the tapes were just all over the place.

Now, when I do backups, they are SLOW!

the definition I have set for the backups in the "disklist" is:
define dumptype always-full {
    program "GNUTAR"
    comment "Full dump of this filesystem always"
    compress none
    #server_custom_compress "/bin/pigz"
    priority high
    dumpcycle 0
and my disklist configs look like: (there are about 100 different backups in the disklist, same settings)
backup amanda_backup /mnt/BackupDrive/scratch/amanda {
        estimate CALCSIZE
        holdingdisk never
} -1 local
My backups are split over 3 tapes (LTO-4), and that setting is: (in the amanda.conf)
tapetype amtapetype-LTO4
define tapetype amtapetype-LTO4 {
    comment "Created by amtapetype; compression disabled"
    length 825876544 kbytes
    filemark 1326 kbytes
    speed 52429 kps
    blocksize 32 kbytes
I don't know why since after I moved tapes around, it is slow as hell. what used to take 4-5hrs per tape, now takes 9-10 hrs per... anyone have any ideas what I can check/change to get it back to 40MB/s?