Coming into the last few weeks here in NY where the weather is finally cooling off and becoming seasonal(50-60's F, sea level), my bike seems weaker in roll-on, and through the low end (as accelerating out of turns). Although the bike was hard to start while riding last Wens, I think this was due to the bike getting flooded a bit because the throttle got twisted inadvertantly while on the stand. When I pulled the plug, it was black and sooty(sp?). The bike is an '05 YZ 450 with 30 hours on it. What jetting are you guys trying this time of year? I'm just confused, even with my thread searches. The bike seemed to be bogging last Saturday, could be jetting related, but then I found a clogged vent tube also.