Ran the CSV through our deduper first. ROAS improved roughly 30% versus the lookalike audience we ran before. Bought it to handle buy jack lead-gen for the United States region. Wished a few smaller towns had been included.
Good to know what worked and what didn't, we hear you on the gaps — the next monthly refresh tightens those exact columns. If you want the gaps fixed sooner than the next refresh, open a support ticket and we'll spin a one-off pull.