I rode my Raptor today (first ride of the year for me, I know.. I'm late) and once it warmed up it runs good, but later after some lugging around and not really riding at WOT I noticed hesitation and bog. I had the valves adjusted a few months back and wondering what could it be? Maybe loading up with fuel? I really hate tearing into those carbs they are a b@tch to work with.

 

Yea sounds like a carb grit problem or spark plug.Try changing spark plugs first.

 

check to see if you choke is sticking inside the carbs it always happens to me the plunger corrodes inside the carbs

 

I replaced the plunger less than 6months ago... I was told (now that memory kicked in) The Raptor's plug tends to foul out if not revving it up. I will try a new plug first.