Matty, as someone awaiting delivery, I have to admit all of the above troubles me.
The big change was the 2014 model - revised steering, cooling fan, Centra compensator, NVH bevel box mount, louvres in rear, strengthened chassis.
It's likey pre 2013 cars will have had some or all of these mods.
You should be reasonably safe with a 2016 and if you do hit trouble you know where to come for advice....
Matty is not the only early adopter to have suffered greatly but the fact that in the end he couldn't bear to part with it shows just how addicive these things are.
You will love it!!