Hey Jinx...welcome to the site, good to see you here.
I ordered my new one from Rex Grigg. I'm not the teckiest person around, and I had him put it together, add a low pressure regulator to prevent end of tank dumping, and also give me the capability to run 2 tanks off of one cannister. He has some good info on his site, and his a helpful kind of guy.
He has instructions there, and you can order parts from him, if you know what you are doing you can build your own. he does have some instructions...which I was too chicken to follow
Again...I think you have to know a bit more than I to do that.