Ubuntu OC memory for second and third GPU


I have a 3 GPU computer running Ubuntu and 510 driver
nvidia-settings is able to recognize the 3 GPU’s
With cool-bits=28 on all 3 GPU’s, I can overclock memory fine on GPU0 but not on GPU1 or GPU2
Everything else is available of GPU1 and GPU2, like fan, core clock overclocking, etc. via nvidia-settings CLI

How can I overclock the graphics memory and provide offset via nvidia-settings or other means on GPU1 & GPU2?

Please advise,

Thank you,