PLEEEEASE!
Force-feeding hatchling snakes anything but a section of mouse tail is BEGGING for disaster. Try deli cups, braining, scenting, live, tease-feeding, combining these tricks, ANYTHING but shoving a whole pinkie into the snake. Even those of us who know how to do it very seldom try. I don't know if I've actually ever saved a hatchling by doing this, and I used to try it on any stubborn feeders if enough time had passed.
Most snakes will eventually eat if you can just entice them to take that first meal. Even graybands and other known tough feeders are most often just a matter of getting them started. If the corn has taken food voluntarily EVER, I would resort to lots of measures before force-feeding.