How about removing panzershreck from volksgrenadiers and instead giving them Panzerbüchse 39 Anti-tank rifle as ammo upgrade?
Don't forget we are talking about '44 - '45 german infantry. The panzerbusche was dead and burried at that time.
Let's make the volks squad to have 4 members. Plain and simple. Ok, they have great AT, great vet, BUT they won't be that durable. What do you people think?