Just picked up my LCR from the local SEAT dealer and when I got home I noticed that both of the headlight lenses have cracks in them. One side has a crack on the bottom ridge and the other has multiple vertical cracks. I presume if left the way it is, the headlamps will eventually steam up? will i be unreasonable to ask the dealer to replace them? Normally how much do these lenses cost and do they only come as part of the whole headlamp unit?