Can't see Custom Fields

Hi we have populated our TRACMOR and put all our items in.  I have also populated the custom fields codes.  Here's the thing i can search for the custom fields but when i open the record the barcode is blank?

Any ideas??  Please see screenshot in link below:

Screenshot 1 - Searching for Assett
Screenshot 2 - Assett details but "None" in serial number box.

http://cid-67a862e29eaac5f1.skydrive.li … px/TRACMOR

Thanks, Ben