You're quite right, I shouldn't have written that. I apologise.

I think we might have to agree to disagree re c/s sprocket. I've found that replacing them early helps prolong chain life, so I'll use two or even three to one rear off-road when they start to 'hook'.

Yamaha quality is undoubtedly an issue in some models imo. It needs addressing. As does that warranty issue, but to be fair, only in countries which import the models in question. Again imo.