Dan, IMO you are going to need to find 2mm minimum - have a look at how thick the standard CAST piston is and then see if you really fancy taking that much off..
Fair play to you for wanting to actually try stuff to find out what it ACTUALLY does though

What are peoples EXPERIENCES of decompression plate failure? seriously, I'm interested in real experience, not pub talk..


mrviper - nice work with the Cav rail!!