I just bought a Truvativ Elita 53x39 crank from Bikewagon, and when I opened the box I noticed that one of the teeth on the larger ring is shorter than all the rest. I've never noticed this before, and I was wondering if this is a defect? It definately hasn't been broken, as the darker coating on the teeth is intact (metal underneath not showing through). I wanted some info from more experienced folks to see if there is a defect before I contact the seller. Thanks!