2000 Yamaha Bear Tracker 250cc Flooded help

[BeardedBackWoods]

So we have a 2000 BearTracker 250cc. We got hit by a tornado and it got flooded out. Water was well over the handle bars and it actually moved almost 40 yards by the water. Anyway, I've pulled the carb and drained the tank. New fuel and a "clean" carb. It fires right up first crank like it used to but bogs down after you try and give it any gas. Think it could still be a carb issue? Carb had a fresh rebuild in April and might have 10-12 hours on it since. After we got it out, It was never started until I took the carb off and cleaned it along with draining the tank. Carb has now been off twice with no differences. Any other ideas?

also the water seems to never end in the exhaust. I've gotten out as much as I could but it's still steaming quite a bit like there's more in there. Could this be the problem? I've never had an ATV get flooded out like this one before. Any help or other ideas would be great. Thanks yal. 

[davefrombc]

Did you also change the  oil and filter?.. Water  vapor  could be coming  from  water  in the oil  boiling  off and  entering  the  intake through the  breather tube for the  crankcase.  Try adjusting the  idle  air  screw and or  the  needle valve settings. Bogging  on  acceleration sounds like  it  isn't  getting enough  fuel  (running  lean) when  you open the  throttle.

[Ajmboy]

* Topic moved to Yamaha forum and title edited to include full ATV info.