Where the right crank attaches to the bottom bracket, the aluminum insert in the crank that goes around the bottom bracket developes a few mm of free play. Unless I'm pedaling perfect circles it makes a knocking sound and I feel it in my legs. This happened to my first set after 300 miles. I finally just got a warranty pair, brand new and at around mile 40, It started coming apart just like my first set. I rode for months with the first bad pair because FSA was back ordered. Now they say I got the last pair and they are not getting any more because they are switching to the new dura-ace type. I'm frusterated!!!!

Ask for a small refund and just have them ship a pair of the non super lights, it's a whole what 50g?

Kyle