Never, ever force feed. The stress from that probably caused the death of the snake. You shouldn't even be touching chondros that young, much less force feeding. I don't know how much snake experience you have, but I'd probably get some more under your belt before trying a chondro again. They require a lot of patience and attention.
I've only had snakes for 6 years- and only boas and ball pythons, and by no means consider myself an expert. I've admitted that it was a bit of an impulse buy, with one of my biggest mistake being buying from a wholesaler, and not asking the right questions.
That being said- I stopped handling at all him after the first 2 weeks. I left him alone, and only checked to make sure he had water and when I tried feeding him. I admit I don't know much about them, and have been reading up on them a lot since getting him.
I don't really believe that the force feeding killed him... like i said before- it was a last ditch effort, and it obviously didn't work. Thinking about how he was looking at the time, I don't think that he would lived anyway.
I will be doing a lot more research on them, and will get one only when I feel like im ready. Im really thankfull for all off your suggestions and advice.