Presumably you have had no luck with the previous owner or supplying dealer. Have you looked at the Technical tab under Members, there is a manual there for a 2012 Hobby. Looking at it, it seems very similar to my Premier Van 65GE 2014 one. So many of the Hobby components are standard up to about 2015/6 so it will give you a lot of information that is relevant.
Hope that is of some help.