So I'm getting fuel leaking out of this carb on these hedge clippers. I can't have that! These are new. One tank through this set. Then a few minutes on another tank. So what gives here? Something the dealer didn't do to this set? Something wrong with the carb? Something wrong with the fuel cap? (I'm new to RedMax, they vent through the cap right?) Trying to get an idea of what this might be so I know if I need to return them to the dealer or if it's something I can take care of easy. Also, for those of you that have these in particular... what are your proven methods of caring for their blades and gearbox, and so forth?