I'm wondering about the setup for the scenario Ambush With a Surprise. The American 2/16 Infantry is supposed to set up within 1 hex of R5. However, the only way every unit can set up within 1 hex of R5 is if they overstack. Hex Q4 can't be set up in because it's a river and is impassable. I've checked WSR v1 and the setup instructions are the same and I haven't seen any errata on this. It would make more sense to me to have 2/16 setup within 1 hex of R6. Is this a possible error in the scenario as printed?