2003 30hp Mercury 4-stroke. I am rebuilding the carburetors. The jet (the one that sits underneath the main nozzle) is stuck on 2 of the 3 carbs, and I unfortunately have mangled both pretty good trying to unscrew them. They have slots in the top that are suppose to fit a large flathead. I've removed and clean these parts a lot before. I've never had them so stuck that the force of my unscrewing mangled the brass.
Anyways, I don't care about the jets, as they are $10 to replace. I just want them out.
Things I've tried:
(1) Letting carb cleaner spray soak in around the jet
(2) Soaking the entire upper carb in cleaner dip for 20 minutes, water rinse and air gun dry
(3) EZ-out style screw extractor, the "drill bit" wouldn't catch, just created brass dust
(4) Taking a lighter to heat up the carb housing around the jet. I didn't try very long because I was nervous about the fact that the corrosion sticking the jet in place is basically old gasoline.
Things I've been told to try:
(1) Take a Dremel and slice new slots for another flathead attempt. Not sure why this would change anything if I haven't loosened the jet.
(2) Take a propane hand blow torch and hit the housing again. Not sure if this will win me a Darwin Award or if that hidden corrosion is safely chemically inert.
Anybody got any bright ideas?

Anyways, I don't care about the jets, as they are $10 to replace. I just want them out.
Things I've tried:
(1) Letting carb cleaner spray soak in around the jet
(2) Soaking the entire upper carb in cleaner dip for 20 minutes, water rinse and air gun dry
(3) EZ-out style screw extractor, the "drill bit" wouldn't catch, just created brass dust
(4) Taking a lighter to heat up the carb housing around the jet. I didn't try very long because I was nervous about the fact that the corrosion sticking the jet in place is basically old gasoline.
Things I've been told to try:
(1) Take a Dremel and slice new slots for another flathead attempt. Not sure why this would change anything if I haven't loosened the jet.
(2) Take a propane hand blow torch and hit the housing again. Not sure if this will win me a Darwin Award or if that hidden corrosion is safely chemically inert.
Anybody got any bright ideas?
