Yes I was having a binding problem with the up and down buttons. No, I don't have a picture on me but can get one later on. It's just the bottom left corner between the down button and left button. No big deal as you can't see it and the buttons now work fine. I did try drilling the whole above the knob and that helped some and then I trimmed aound the down button with some small wire cutters very successfully on the first lens (dark smoke). I didn't feel like looking for the small wire cutters I used on that lens so used some large ones on the light smoke lens and accidentally broke the corner and it worked so well I just broke the corner off of the green one without thinking twice about it. Pretty simple fix for the impatient.