86 fourtrax runs rich and wont idle right

I recently purchased a 86 honda fourtrax 350 4x4 and it is running too rich. i talked to the neighbor and he said it sounds like you choke is stuck on. So i cleaned the card and replaced the the choke plunger in carb(the o-ring was bad and didnt slide up and down very easy). put it all back together and still runs rich. I'M not the greatest with carbs but i have always seem to get by. i was wondering if there is something im missing.????