Problems using MARC::Charset

[Sperr, Edwin]

I've tried running my records through MARC::Charset, using the
formulation:

while (my $record = $batch->next()) {
        $cs->to_utf8($file->write( $record ));
} 

However, what I get back still isn't valid utf-8 -- in my leaders, I'm
left with stuff like:

01533nam  2200337Ia 45
0

This causes either further parsing or display to break.

Am I using MARC::Charset correctly?

Thanks!

Ed Sperr
Education / Electronic Resources Librarian
New England College of Optometry