Hi all, I just installed Cobb 155 50/34 crankset on my S40. I had Sram Rival crank and BB. Since it's GXP compatible, Robert said I should be able to take off the Rival crank and install the new crank easily. It did install fine. However, I found the new crank has a little play, my guess about 1 or 2mm. Is that normal? I did torque it to 35 ft lb as instructed. Is this manufacturing issue? Help!