The issue here is that the map config incorrectly sets the map bounds as 2048 (you can see this in config viewer) when in fact it's a 20x20 map, so the sector analysis is all our of whack. You have to set the map size manually in the indexing module (simplest approach is to count the squares along a side of the map and round up to the nearest thousand - 21000 in this case).
I've reindexed with your object categories and all looks good. You did the hard bit, thanks!