I noticed a few things...

1.) The animal was used to eating live prey... I understand that the breeder said he had moved him over but that could have been as little as one meal..

2.) He was with a breeder which means he was in a rack.. He was a good eater because he felt secure. You moved him to a massive enclosure and he didn't like that and he let you know that by not eating..

3.) You have changed the enclosure which is great. The 36" is way too big. I would only offer food every 5 days for that age snake. Given that the snake is young and they don't have a lot of reserves my personal opinion is go back to live which is what he was used to. However it does sound like he took a F/T dipped in the broth.. If he refused this meal and refuses the next one, live prey would be going in... Have to get the snake eating..

Did you get a weight on the snake when you first bought him and what is his weight now?

This came up in a thread yesterday as well and it's almost always a husbandry issue that messes with feedings in this age of snake.. They are veracious eaters at this age when the conditions are right.

You have to understand you changed his entire environment from what he was used to and not eating is the first sign of that.. You have to think about what is best for the snake... If F/T isn't working and he is refusing meals then you will have to make changes..