Have a go yourself as andy says, the benefits are massive, particularly if something goes wrong you know where to look, and can build in some interchangability of components to get you home.
I'm in your area, and your welcome to come and have a look at the system I've built after completly gutting my own RIB last winter and starting from scratch. So far nothing I've put in has gone wrong, just the expensive bits its been connected to.
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club