I RECEIVED THE FOLL REPLY FROM ebcbrakesdirect.com
QUOTE
I have spoken to EBC's technical department and they have advised that if you are going to use EBC brake pads then do not re-fit the plastic spacer or metallic one, as the EBC pads do not require these. The purpose of the spacer is heat insulation, EBC pads are slightly thicker and do not require these spacers.
UNQUOTE