I never have a problem. I always email the scan #, the Row and the Chip.

Scan #1
Row 1 Chip 2
Row 3 Chip 4

Scan #2
Row 1 Chip 1
Row 5 Chip 5

See how easy that was? When your posting 500+ chips it takes a Looooong time to number, but your right, its not a bad idea.

Thanks,
Doug