How about changing your one regex just a tad:

my ( $name, $value ) = ( $line =~ /^\s*(.*?):(.*)$/ );
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to:

my ( $name, $value ) = ( $line =~ /^\s*(.*?):\s*(.*)$/ );
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This might squeeze any leading spaces from $value. Noting seeing the data file I'm not sure this is necessary. But from the other comments it looks like "poke" around time.

Claude