Just received my Pikes I got from Bike-Discount.de. I ordered the 150mm 29er versions with 51mm offset. There is nothing on the fork itself to indicate it is the 51mm offset model and I just want to double check i've been sent the correct model. Is there a way I can check viat the product serial number? I've looked at the SRAM/Rockshox website and nothing jumps out at me.