I think you don’t. You just denied the entire notion of daas torah.
This is what the Chazon Ish says about that:
Rough translation: The distinguishing between psak of issur and psak of guidelines and decrees, is displaying novelty in the Torah, and is desecrating Talmidei Chachomim; and those who do so have no share in the World to Come, and are passul as witnesses.
Source: A private letter entitled ????? ?????, which is has been published. Just google the words and it’ll come up.