You need roughly 10 hours ride time for the suspension to settle in. Then get straight to setting the static sag for your individual size/weight.
I quit racing a few years ago at the ripe old age of 54, so I'm not up on the very latest Yami suspension. But "Cut me and I bleed Yamaha blue" was my montra for life.
You'll love the agility of the 250 four stroke, excellent choice. Power is strong and manageable. Keep the air filter clean (and oiled) and the oil & filter changed every 10-hours of runtime. Use Simple Green to keep it clean and the engine should last you 500+ hours before needing anything major (valves, piston/rings).
As for the KTM... Keeps Taking Money - but they are the hottest production bikes on the market today. Remember, horsepower does NOT come free.
Have fun!
Thanks for the great advice and tips. When you say use simple green you mean just to clean around the engine area right?

