I think a lot of bearing issues are assembly line related - ie they are put it backwards. Generally, Second gear and detent spring problems are more poor design than manufacturing issues. No one has come forward yet with a problem circlip like I've had.
My local dealer said they have never seen a 3rd gear issue in 12 years of selling and servicing rockets, so sadly I don't think mine is a manufacturing fault. Still, I'll take it a bit further with triumph and see what comes of it.