Hello Fastmongrel
Good catch, but I think that the Guardsmen didn't take into account that kind legal details.
Yes, carriers were very numerous and while good towing machines for 6pdr AT guns, I'm not great fan of them, IIRC they were rather noisy for recon work, IMHO too small to be effective transport for mortar crews, IMHO German and US armoured half tracks were more useful in that role.
I like the British Scout Car Daimler AC combination for recon work with a couple AECs and some infantry in M3 h-ts as back up.
BTW, combat weight of Hetzer was 16 tons.
Juha