IDK your shop, the Trek Dealer here would take your bike in and trade towards the 520.
NB 2_520s next year .. either rim or disc brake fittings on their frames ..
BTW when setting up a new bike ask the shop to change tires the bump up in price won't be much.
& swapping out the granny gears to a smaller one than factory fitted is also do able.
Last edited by fietsbob; 09-11-14 at 02:56 PM.