I've been making my ADV (Ryic)with Hangsen RY1 for ages now. TFA used to have it in the nice 4oz. bottles, but they don't carry it at all anymore, nor is it still carried by ECX (neither carry Hangsen at all anymore). In fact, I can't seem to find it anywhere. Does anyone know of a viable substitute? I'm sure I could get used to a little variance, but I'd like to find something at least close...