Guys, I have a 1996 Suzuki King Quad 300. I let it sit up over last winter and I can't get it to idle when hot. It does fine before it heats up, but when it get warm, it smokes and will not idle. It also runs a little rough and is hard to restart. I too apart the carb and cleaned it. I also disassembled the fuel **** and cleaned the screens. Still didn't help it. I need help!

 

Welcome to the forums.
It still sounds like a carb issue to me (choke circiut). The lil passageways can get gummed up when sitting. But I'm no KQ expert.
I'm sure others will chime in and help.