guide to reduce V3 mono gain

[Rotel75]

My (RCA only) tube preamp has a lot of gain.
I'd like to reduce the V3 mono gain (<25dB).

May I have the schematics?
Or can you teach me what to change (resistor at opamp 1)?

I have the early model from August 2024.
It seems the new revision has lower gain already. What was changed?

thanks