EVERY brand engine will have failures; nature of the beast.... We are turning these engines at very high RPM's, there are numerous reasons an engine can fail. Says nothing of the quality of the engines unless this was a common occurrence (which as far as I know, it is not with Wren or their 160). I see nothing malicious with the OP checking to see if this failure has been seen before with this model and I don't see this as being a negative reflection on Wren. The Wren team will take good care of you, they are a first class operation..... JMHO