That would have been my post, Eric, August 2017. What I haven’t seen is anybody else reporting the same problem and when I spoke with Tony Lee about it he reported SNG had sold 1200 of them without complaint - that’s a small rate of failure that should temper your concerns somewhat. Another thing is the damper failure didn’t result in any engine damage, even after driving with it rattling around inside for a couple hundred miles, because the broken piece was too large to fall into the timing gear. Tony reported having a couple of XK engines from military vehicles in their shop that had both upper chain dampers broken off - ostensibly OEM - yet were still running. Which is to say, the probability of failure of one of the guides in your engine is already exceedingly small and even then the probability of a resultant engine failure is low. I’m still driving the car with the missing damper, though I will be addressing it sometime this spring.