A device and method for adjusting the height of an off-contact printing press frame for a screen relative to a pair of opposed frame holders supporting the frame therebetween is disclosed. A different level of binding or pattern of binding of antibodies which are specific for arginine containing proteins in their methylated state indicates an abnormal condition. By establishing levels of reliability of the raters, it is possible to improve the relevance of the resolved rating values and to reward those providing highly reliable ratings. The system also generates a session key for the email message, and encrypts a body of the email message with the session key.