I am trying to fix a fs85. It idles ok but after it is run for a short period (30min) it will bog when given throttle. I can feather the throttle and get the rpm up but if I give it throttle without feathering it it bogs and dies. then it doesn't want to start back up. It sounds like a fuel problem. I have had the carb off and cleaned with carb cleaner and compressed air. As far as the primer on top of the carb, should I be able to blow through any of those orifices? I have replaced the spark plug. Fuel filter looks alright. Any thoughts on what I may be missing?