Hey, Finally joined the list here after lurking for quite a while... I just finished modifying my Lexicon pcm42 MEO per Bob Sellon's MEMX instructions. I can't believe it, but it still works and it now has 19.3 seconds of delay! Next up, memory expansion of my Delta Lab ADM-4096. I figure I should be able to up the delay to about 24.5 seconds...maybe more (depending on how much room there is inside the box).