I've done 8000km with my R, it is a fantastic bike!
there is only one issue with the heat on the left leg when the temperature is above 30°. I solved it by putting a plastic barrier 10 cm hight that allows the hot air to move back before going up.
I mounted the high screen the other day because I'm leaveing tomorrow for Croazia. It is perfect on the motorway but.... at high speed the bike is more instable, expecially in it's higer position (with pennires). At around 180 km/h the bike starts to wave, this is someting that with the low screen dosn't happen (I toke it to 250 without issues).
After 7500km tires where gone, I'm now running on a new set.
Regarding the turn signal switch it's because it's new. After a while it works fine.
Ktm 1190 adv R------ Ktm 350 exc-f