I also bought a 2014 Giant TCR, which came with the PSL-1 wheels I believe. Has DT Swiss hubs and spokes I believe. One of the spokes on the rear wheel, non drive side came loose. I noticed it because the wheel came out of true and was rubbing slightly, and I fixed it before the spoke broke. It was loose to the point where I could wiggle it with my fingers... This happened after only a few hundred miles.