hook_insert not inserting entire post.

I'm working on a module that transforms user submitted XML into a node. At this point, the module transforms the XML into HTML that is inserted into the module's database table. When the HTML is submitted to the database, it is shortened to ~ 1000 characters. Any thoughts as to why this might be happening?

Here is the relevant part of my .install file:

        'finding_aid' => array(
        'type' => 'text',
        'size' => 'big',
        'not null' => TRUE,
        'description' => t("Transformed finding aid for display."),
        ),

And my hook_insert implementation:

function ead_insert($node) {
  $file = file_save_upload('ead', $validators);
  $node->finding_aid_filepath = $file->filepath;
  $node->finding_aid = ead_transform($node->finding_aid_filepath);
  db_query("INSERT INTO {ead} (nid, vid, finding_aid, finding_aid_filepath) VALUES (%d, %d, '%s', '%s')",
           $node->nid, $node->vid, $node->finding_aid, $node->finding_aid_filepath);
}         

If I echo $node->finding_aid I get the full HTML but when I check the entry in the MySQL database, I get the truncated version.

Thanks!

rubinsztajn