The way in which some details of the design cross the join between blocks with certain difficulty can be seen here. The waves in the middle of the scene do not line up on the two sides and there is some gap between the two sides of the horse's head beneath. On the other hand, the reins held by the soldier at the bottom are carved across this line without problem. This all seems to suggest that the joints between blocks did cause the carvers problems, perhaps because they were fragile (perhaps the stone was damaged) or because the join had not been made tight enough.
