Removing stuck mixture screws

[ZombiePotatoSalad]

I'm trying to remove the mixture screws, as I've taken this carburetor apart 4 times, and they're the one thing I couldn't touch... because they were stuck. Steve suggested getting a rotary tool and cutting into the sleeves the screws go in to make a new slot. I've tried that on one, and it still won't turn. I'm afraid to go any further with it.15741995822782921026765113599980.jpg

[steveb922]

Things I've found useful are heat, penetrating oil, a screwdriver that fits exactly, and patience. I've taken a fortnight to get one of these out before. Soak, heat, soak, twist maybe one-eighth of a turn, work back and forth, soak again, leave overnight........ You get the picture.

Sorry I can't give you a better answer, but IMO it's better to take it slowly than mangle the head of the screw.

[ZombiePotatoSalad]

Maybe. I've already tried heat and penetrating oil. The screwdrivers I have don't seem to grip well.

[chuck hahn]

little twists in and out, some more air to blow crud out, more oil, out a little further than before then in. Keep repeating the pattern. its gonna take a lot of work but as long as they move youve got a chance