Realistically speaking I do not think WREN will be solving this issue free of charge as I think that this may prove to be too expensive (i.e. their downfall) for them to do so despite their obligation (legal and/or moral) to do so given the inherent risks defective turbines may pose both in terms of health and safety risks to both the owner and/or to third parties. In terms of liability issues on the sale of a defective product I still wonder if they are yet out of the woods. This is a catch-22 situation ....if one does not use the engine (i.e. a useless paper weight) one still may have recourse against WREN but if one solves the issue and uses the engine by purchasing an after-market part replacement one will let WREN scot free. Choices! WREN's history has been impeccable, up to 160 release (and that this what made me chose this brand). However, since this issue surfaced I do now have second thoughts about their reliability and competence. As you rightly stated, they do have a PR issue which they may choose to ignore to their detriment. Whilst I do wish WREN the best of luck (they may really need it) I, for now, will choose to walk away from another WREN purchase.