I greet you from the USA where I believe you can no longer find anything EPX. The few dealers I see listed are in "The Land Down Under".
As I scan the topics, I notice that virtually all posts for about Tera Shark inquiries. I have had my 303 Road bike for 10+ years now. The only problem I have is a mis-shaped aluminum braze on that routes the rear brake cable housing into the top tube. Since it is not a weight bearing part, I reshaped it using a little electical tape and added a little touch up paint purchased at a hobby shop (not an exact match to the yellow, but close enough).
It came originally equipped with Shimano 105 throughout, but I have upgraded to FSA Carbon cranks, Specialize carbon seat post and Shimano Ultegra 10-speed drive. I still have the original 105 components if anyone is interested and we can connect, feel free to reach out.
Again I ask, where are the 303 Road bike owner's. I am interested in seeing your experiences with EPX. Great product from my experience.