Adjusting Studio Display angle

[alexf]

I have 2 same model 17" Apple Studio displays (LCD translucent) that I use side by side and the angle is slightly different on each of them, which I find annoying. Is there any way to adjust the stand in the back to control the slant angle on the displays?

I see 3 small hex wrench screws but I don't want to go adjusting them if I don't know what they are for.

Thanks in advance for any advice!