Nikkor 135mm F2 on a D800E or D810

I have an older Nikkor 135 mm F2 lens with a manual aperture ring. However, this lens can also receive mechanical aperture control from the camera, except the lens has a stationary tab that prevents this from working on modern bodies.
I recall reading about removing this stationary tab (not the aperture control tab) to enable camera control of the aperture.
Does anybody have any experience or information about this ?

I think you're talking about converting a non-AI lens to AI... There are several sources that provide this service and sell the parts needed... google is your friend

Thanks, and wow:
Nikon Ai Conversions

A trip to my local Nikon service center I believe.

Not sure where you're at Bengt, but it looks like there's a few Nikon repair folks in NYC that can do that conversion for $30-$35... not including postage... just verify that they have the specific part for your lens...