So I've noticed lately that my husqavarna string trimmer bogs down a lot under full throttle. I pulled the plug and its white and ashy. Definitely too lean on the high end. So I grab a screwdriver to adjust the high needle.... Nope... Its got those stupid splined adjustment screws. I'm not taking a 100 buck trimmer to an engine shop just to open the needle 1/8 of a turn. Before I take this whole thing apart and use a needle nose pliers to try and pull the screw to slot them with a dremel... Anyone know where you can actually buy the stupid adjustment tool for these things???