Title: Euler Systems for certain non-unique models Abstract: Pushforwards of Beilinson's Eisenstein symbols into the motives of Shimura varieties provide fertile grounds for exploring instances of the Beilinson–Bloch–Kato conjectures, particularly when these constructions are accompanied by period integral representations. About a decade ago, Pollack and Shah introduced two novel Rankin–Selberg integral representations: one for the […]