Hi Ron
There are some software differences between the 2013 Evo and earlier versions, which is why lambda eliminators don't seem to work on the later model. However, as far as the servo motor is concerned, the part no. is the same for all Evos as is the wiring loom so the plugs should be the same. I think the problem is because jonzi has a 796, which uses a different motor and which, presumably, has a different plug.
You could ask the manufacturer if the internals are the same and, if they are, you could put a suitable plug on yourself. You can get wiring products from here:
http://stores.ebay.co.uk/3waycomponents/ with 10% discount for members.