you should try a live pinky in a deli cup and leave it alone for an hour and check the cup and see if it has eaten it.
My kenyan babies that I feed frozen thawed to have to be enticed a bit, I dangle the pinkys in front of their face and if they show interest I will push the nose of the pinky up to the nose of the kenyan and if they are hungry they will usually eat it. others I have to tap the pinky on the snakes nose lightly but enough to irritate the snake and sometimes they will strike and coil on the mouse.
Marc x