[SOLVED] Endless browsing encoder

I have just bought myself a pair of 900nxs and one of their encoders(browse) are much flimsier than the other one and i wonder if i should be worried it will crap out on within a year or am i safe. 

Im also afraid that the warranty won't cover it since poor build quality easily can be thought of as careless usage.

Are the encoder posts made of plastic?

I have had the decks only 2 weeks and i love the user experience the nexus series gives but every time i touch the encoder i get the chills that it might break if.