I posted this the other day in another thread but, you can try these:
Get a little plastic Chinese food container. Put the snake in that with the fuzzy and put the lid on put it back in the enclosure. They will sometimes eat it as it's the only thing in the container. Have you tried braining the fuzzy (not live) that works sometimes as it has more of a scent. You can also wash the fuzzy to reduce the scent it also works for some reason. You can try scenting with chicken feathers or some fish. Make sure the fuzzy is about 38C. Try feeding at night.
Hope these help.
The biggest thing is to try and limit the stress on the snake.