Wanted to let you know of a great adapter made by Sal Gonzalez.
Some of you might know Sal from his work at Otto Nemenz were he was head machinist for a bit.
The piece lets you place any monitor with 1/4/20 screw to work on your pro monitor arn mount in case you original monitor dies ( in my case very far away from any repair station) or for use with your regular monitor, such as TV logic or Small HD.
The price is 80$, for steadicam operators on the Forum. He also makes custom jobs, and I've always found him a life saver when in a predicament. I hope he can help you out as well.
I'm adding the link to his page.