Originally Posted by Nev..
...the temp is adjusted by 18C and 36C which I think is probably a bit much. On the cold setting I think the bike is running too rich, it will almost idle off the mark in 1st gear with no throttle. I think I will just leave mine on the hot setting all year round.
It sounds like you're saying the engine runs stronger or idles higher in the COLD / RICH position (at least for that days ambient temp) & the opposite in the HOT / LEAN position & you may be erroneously concluding the rich is too rich.
Generally a TOO LEAN condition begins (at a given load & power setting) around peak RPM, lean up some more & RPM/power will fall off. This is what it sounds like to me you're describing.