Sol Finding #918 — 1816 Grand River added-rows
GPT-6 Sol finding #918 (commit ed15086): the 16 Oct 1816 Grand River return’s 19 printed rows add exactly to 585+657+492=1,734. “Lake Two Mountains, to be added to the Mohawks” (10) is already inside that total — adding again double-counts.
“Onydas, 9 to be added” and “Oghqwagas, 9 to be added” do not visibly add 18 to the printed arithmetic. Upper/Lower Cayuga 195/183 vs 1817 195/187 is not demographic or annuity proof.