Hey guys this is my first post. I have a question, my XT will run nice and strong until the motor has ran for about 10 min or so at higher rpm. After a while it will start to break up and if I let out of the throttle it will catch it self. I can start to run at W.O.T again. Then it will cough and break up again and then quit. It will not restart unless I push the primer again, will start and quit. Am I needing to vent my fuel system? I'm thinking I'm creating to much of a vacuum in the tank. Any input will be appreciated, and tips and tricks are welcome also.