my corn snake

Question
hi i have got a cornsnake ive had him about a year now he has bumps all the way down this body and i don't no why this is i was told he would grow out of this but he hasn't hes also every thin but eats very well is there anyway you could help me out thanks

Answer
I have seen many baby corns come out of the eggs with spinal deformities-that could account for the bumps.  Also, those babies, while they eat well, often do not grow as large as their "normal" litter mates.  Without seeing your snake, that would be my best guess as to your problem.