I used the dusk devil sight two years ago and did not like it all that well. I did not like the fact that you had to be careful how tight you tighten the pins or they had bend the sight and tilt the pin. I did not have a problem with the sight itself moving, I would put lock tight on all of the screws to keep them from loosening over time. I also did not like the sight because in the extreme heat the pins would warp therefore changing the constistancy of my shots. Since then I have changed to the new flash point sight and have not had any problems with it. The dusk devil is a good overall sight I just needed something that could tolerate the heat during the archery season. Just my .02