so Jony- did you do this upgrade? Anyone else try it? After doing my adjustment last fall, i've put 4K on the bike, and some play has reemerged, so i'm suspecting that replacement is called for. Cost is not cheap ($127 vs $55 or so), but if it's a lifetime fix like he says, then it's a great deal in the long run.
Do you know if this is the same Tom Cutter of Dual Plug fame?? If so, his credibility is confirmed to me.