I have a 1995 Yamaha Warrior 350. My problem is when it gets hot (5-10 min of riding) it runs like crap (starts to break up) and then it will stall and won't crank til it cools down. Any info would be much appreciated.
We have put a new air filter, oil filter, oil, and cleaned the carb on it.

 

Check the gas tank vent. The tank might not be venting correctly and causing too much vacuum in the tank to pull fuel into the carb after running for a bit. Try driving around with the fuel cap removed see if it still stalls.