Cheers Spin, that's just what I was looking for.
I've already invested in a set of alloy plates, and since I knackered my first slipper though not realising it needed greased, I've greased this one up pretty comprehensively. I'll take your comment about 'lightly' greasing on board though; I guess I don't want a lot of clarified grease floating around my clutch basket!
Thanks again,
Iain C.