which style carbs?
"burning my hands" seems to indicate later style carbs with the adjuster at the cylender side.
if so, a short length of tubing (brake line or copper) just large enough to be a press fit on the screw will allow you to extend them down far enough to adjust them and keep hands away from fins.
If you -can't- find tubing that is a snug enough fit, get a chunk smaller and split it with a thin saw blade for about 1", then spread it just enough to fit over the screw, the edges will grip the knurls and allow you to do the adjustment, larger tube can be used too, but in that case make the cut then lightly flatten the tube on the cut sides.
if you want to use a screwdriver, slip a short length of rubber line over the screws to act as a guide so all you have to do is catch the tube and turn screwdriver till it drops in the slot.
ken.