i have an 05 400ex and i had the same problem but i determined i had a little bit too much oil in the motor as soon as i drained it and had about another hour of ride time on it i never seen it smoke again that was about 8 months ago and i'm still riding it pretty hard

i was just there this weekend and as long as you stay near the front during hunting season you should be fine i've spoken to several hunters out there and if you don't care about about a bunch of guys sitting in the bushes with rifles watching as you go by not even knowing they are there then i wouldn't worry about it and try to stay up front and give them the respect for the three months out of the year and abot the cops they have talked to me before but never asked for a deed or told me to leave