Recently purchased second hand a Lum-Tec M52, which I love. Like many other members of the forum, I had no success in trying to install the tungsten bracelet. Although the watch looks amazing on the leather strap, I was itching to try the tungsten. I contacted Lum-Tec to ask if there was a trick to installing the bracelet and explained how I had already destroyed two spring bars and spent over four hours in the attempt. Nicole at Lum-Tec very kindly offered to send an assortment of spring bars to me, which I recieved in a matter of days. After watching the video again and using the thinner spring bars I was able to install the bracelet in a few minutes. Thanks Lum-Tec.