Can you help me diagnose my bogging issue? I have a redmax line trimmer that's been bogging & can't reach full throttle. I've cleaned out the carb, fuel filter & still bogging. I replaced the carb with an aftermarket one along with new fuel lines/ filter, spark plug, air filter & still bogs. Tried adjusting the carb & still bogs. Bought this brand new & I've used trufuel for most of its life. I'm stumped on this one. Any suggestions?