Hey everyone after searching I can't find anywhere anything on how to machine rotors. I have been to several machining shops here in Greece and no one can fit my 3mm apex seals. Is there any special tool or technique that they use to do this. My friend Pip from WGT in the UK told me that the grooves have to opened to about 2.98mm. No one, absolutely no one has any idea on how to do this. Can anybody help me?