hawg dawg now that surprises me cause I didn't have any trouble with mine. Sure I will have to tweak slightly when I get home, but they stay tightened down. I do check every once and a while because even with the Sims stuff I have there still is vibration. But never have had one come loose really!

mex, doubt if I will use anything else either. Once I realized how good my groups were, and I guess it helped with aiming, I decided i was glad I bought it!