Amen to that! The threads strip VERY easily. Also clean off the lube from where it pivots and do not relube it. This helps to keep it in place when reinstalled.Be careful you don't strip the threads it's pot metal in there..
Problem with aftermarket is that they are all flat glass.. this makes it look like it is vibrating more when it actually is not... like already said, find some OEM (which have the convex glass) and do what ever is neceaary to get the screws tight enough.. even when the pot metal is stripped you can rethread, drill through and rethread, or just drill through and use a long screw with a nut on the inside or outside..JC Whitney are for s***. They vibrate and move so much they are basically useless. I have to reset them all the time. They vibarate so much objects in them are unrecognisble. I would like to find some good ones. Any thoughts?