rx7, some clutch pictures -
http://s785.photobucket.com/albums/yy139/mikedoo3/
I'm using the Xray collet for Novarossi, I'm using an OS engine. Thickness of the shoe is about 4.5mm. I don't see anything wrong. I'm thinking about compressing the clutch spring in a vise... bad idea? or maybe it won't do anything, I don't know.