So, I brought a snap on roll cab back when I was an apprentice and among the tools I found a brand new lumenition optical ignition conversion kit, I've only just thought about researching it. I found them online for around £200-250 mark, before I sell it I was just wondering if they're much use and if they'd do much on a 4e? I've searched through the forum but been able t find nothing about them, which leads me to believe for some reason they aren't able to be fitted or perhaps they're a load of crap? Anyone have any info? Cheers