I cut a length of music wire from a hobby store to use as a punch on the 2-3 carbs as I did not like punching at an angle with a pin punch. It runs through the 1 or 4 and then rests against the 2 or 3. a pencil torch is handy but the carbs need to be very clean and very dry to prevent death or dismemberment, getting those pins out is delicate work. a cast support standoff, with years of use, and some pitting, will snap like a dry twig. If you do break one off, I have used dental drills and tiny pins up through the center to reattach them. Much like a tooth implant procedure only no blood. That is even more delicate of an operation.