I'm working on this interesting kit at the moment but am wondering about the ventral rearward - firing machine gun position, or more specifically the clear part. There seems to be little or no framing - is this correct? Also, the trigger/handle assembly is upside down. Was this a manned position or was it remote controlled? It seems very close to the 75mm gun breech, but it is possible for a gunner to squeeze in if he lies down and doesn't have very long legs....