At the red end the gap's fine position shifts between releases: evaluated at the exact DR2 gap bins, the three reddest strips ($2.55$–$2.70$) give only $2.8$–$5.2\%$ in DR3, while their maximum-decrement bins sit one $0.051$-mag bin away with $10.9$–$15.3\%$; the blue strips agree at the same bin.