I remember reading about people wanting to make a pedal grind plate, a little bit back. And you said it should be plastic.
well, I found these, they’re made by Kommando, and they’re only $ 7.99 !! Wow!
http://www.danscomp.com/cgi-bin/hazel.cgi?action=DETAIL&item=512057
Well, hope this helps, if you haven’t yet found a solution to your problems.
-Ryan