Have a issue I've never seen before. I've worked on a lot of small engines. I'm working on a 2004 sportsman 500 HO. Will fire right up and idle. Sometimes ride just fine. But all the sudden Boggs as soon as I hit the gas. 1 min later. Runs just fine. I've been through the carb 3 times and the fuel pump twice. Cleaned air filter. Drained and replaced fuel. Replaced spark plug. Still same thing. Runs great 1 min. Next min it consistently bogs out