i have a 225 excell 2stroke on my cabo 216.it idles fine and wot fine.the problem is when i put in gear and give it throttle it blubers,stumbles and then dies. if i hit the choke switch it seems to clear itself and then runs. i was thinking it was a fuel delivery problem or a block in one of the carbs. any help would be of great help since the cost of fuel now days keeps me from taking it to a shop and hopfully i can fix it myself!