ok. i figured out how to phrase what i want to do.
i have 2 bay III filtesr. I want to fit both these filters on the taking lens and the viewing lens of my 2.8F at the same time. However, there isn't enough space so the only way is to shave of (or cut) a small portion of the filter intended for the viewing lens so both filter can be mounted at the same time.
i need to find a place to cut it.
hope i am clearer now!