18 diodes per line by 16 rows on the left. = 280 diodes total
16 diodes per line by 15 rows on the right. = 234 diodes total
top row is only 10 each vs 18 or 16 like the rest.
I'd skip amazon and reach out directly to viparspectra.
They have a rep here on growdairies.
growdiaries.com/grower/ViparspectraEmily
Could be a revised model or something else.
check all serial and lot numbers before contacting them and get your amazon receipt ready.
Good Luck!