LinuxQuestions.org - SUSE Linux, 2.6.16, fsck returns bad superblock on reiserfs, next step

Working on an inherited system. I can't write (tried touch) 2 of the file systems even tho they show up in /etc/fstab as rw. Tried to remount with
mount -t reiserfs -o remount,rw /dev/stage2/lvol0 /stage2
it returns can't read superblock, so ran
fsck /stage2

it returns
bread: Cannot read the block (4026531839): (Input/output error).

Warning... fsck.reiserfs for device /dev/stage2/lvol0 exited with signal 6.
fsck.reiserfs /dev/stage2/lvol0 failed (status 0x8). Run manually!

so ran

fsck.reiserfs --check /stage

it returns
Do you want to run this program?[N/Yes] (note need to type Yes if you do):Yes
bread: Cannot read the block (2): (Is a directory).
reiserfs_open: bread failed reading block 2
bread: Cannot read the block (16): (Is a directory).
reiserfs_open: bread failed reading block 16

reiserfs_open: the reiserfs superblock cannot be found on /stage2.
Failed to open the filesystem.

If the partition table has not been changed, and the partition is
valid and it really contains a reiserfs partition, then the
superblock is corrupted and you need to run this utility with
--rebuild-sb.

New to linux so not sure what the risk is in rebuilding superblocks (drive hasn't been repartitioned that I KNOW of - but is inherited so...)

Anything I should try before running fsck.reiserfs --rebuild-sb, and will that also fix the 2 directory blocks it can't read?

Thanks,