i have a nikon 17-55 2.8 and the small little plate/cover that surrounds the m/a - m switch is cracked and I'd like to replace it. there are just 2 screws that hold it together so I think it would be a simple repair (just pulled of the cover and the whole switch needs to be replaced, no biggie). anyhow, any where that I could order the switch from? anyway to find a part number? anyone have a nodevice.com login?