Hello again, I've returned to report on my success!
I am thankful for this thread and Mark's help. This was a very simple to follow modification and it took me about 30min to complete.
I still have to return to properly sealing the rubber, currently covered by the blue tape.
As for tools, a few screwdrivers (small) and a picking tool was enough.
The 7x50 FMRT is truly a beautiful binocular, the views are extremely comfortable, bright and sharp.
Sure 10 magnifications show more, I will still reach often for this 7x50 and it's relaxed clear views.