2.5 hp 4 stroke bogs down@high speed

I have a 2004 2.5 hp 4 stroke. It starts easy. I must let it warm up at least 5 minutes before I can give it any throttle at all or it will die. If I leave the choke on I can throttle up. After it warms up and run my dinghy for 10 or 15 minutes it starts to bog down and I cannot throttle up. Less than 10 hours on the motor. Any ideas?

could be possible carb issue(debris or water)