I have found my bike runs better (at least according to my ear) with motul 710. Wear is good. It doesn't answer your questions as it runs worse with motul 800 (and other fully synthetic oils) which is higher quality. I would suggest just using (and jetting accordingly) the oil that is easiest to find near you and stick with it
I have my switch on the handlebars as well, but honestly hardly ever use it so it might as well be on the radiator hose
PV spacer is probably my best mod, especially for hard enduro
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2003 txt250 Pro
2013 Ossa 280i
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