growfs on ufs2, anyone willing to work on it?

Hi folks,

We have a situation at work in which we'd like to run growfs on ufs2.
It works great on ufs1.  My sanity check for growfs on ufs2 is
	tunefs -n disable <FS>
	fsck -y <FS>
	growfs -y <FS>
	fsck -y <FS>
	tunefs -n enable <FS>
This works fine when the initial file-system is ufs1 ie (newfs -O 1)
but doesn't work so well with ufs2.  I turned off soft-updates just
to make it simplier.  When the 2nd fsck runs after growfs it has
lots of issues with the file-system.  I can easily repro. this.

If anyone is interested in working on this problem please let me
know.  Funding might be arranged.  FWIW, I'm running FreeBSD 7.2.
Please cc me in replies since I'm back-logged in my FreeBSD email.

Thanks,

Doug A.