Think I have a set of PD-M550 kicking around as well.
From memory they're much more beaten up then the ones that OAH has offered above probably need a service as well. Yours for postage (if I can find them!)
Thanks for the responses. Just like when you cast the Spell Of Finding on a lost tape measure by buying another one, it appears that posting a 'Wanted' makes pedals I didn't know I had turn up in a box I thought I checked
So I'm sorted, thanks.