Db recov and umask problems.

I am having some trouble with umask and/or permissions it would seem.
Every so often database recovery is required because a log file does not
have g+w permissions. What is puzzling to me is I have svnserve,
svnlook, svn, and svnadmin commands wrapped with a shell script like the
following for svnserve:

#!/bin/sh

umask 002

exec /usr/bin/svnserve.real "$@"

But I am periodically still getting log files owned by root and not g+w.

-rw-rw-r-- 1 jlong svn 1048510 Jun 12 19:39 log.0000000658

-rw-r--r-- 1 root svn 1514 Jun 12 19:39 log.0000000659

The repo dir is chmod g+s also.

Running version 1.1.4

What am I missing here?

--
Jeremy