[Imp]

Simple answer I would not bother doing a thing just let them do exactly what they want. When the tanks turn up they will have saved shots & be in better health because they used the heat rounds when they had to. More men means more chance of an effective assault so letting them use it in the 3rd or 4th slot makes loads of sense as it will not be wasted. Lose enough men you lose your RPG shots then you really wasted them