i have a polaris magnum 330 (2004) with only 107 hrs. its been running great for several months with a new carb. i recently was using it in the heat after and after an hr or so it had no power. it idled fine but when i accelerated it bogged down and would barely move. if i throttled to heavy it would die but start back up with a good idle but again no power? Fuel is good, air filter good, plug looks good. any thoughts?