96 xp bogging

Hi, I have been trying to get my 96 XP running right this season. After it warms up the acceleration dies and the throttle does nothing. Pulling the choke kills the engine. I replaced the plugs with no change. In the beginning of the summer the problem started as a gradual miss but if I tweaked...

I have a 96 xp that I just cant figure out how to fix. It ran great until about 4 years ago and then started bogging down when I would first start it then after about 5 minutes of putting around at idle speed would all of a sudden take off and run great for the whole run. Then when you...