[rockpaperscissor]

Dang, I thought I had something there, but your arguments make sense. Thanks for your comment, SmashedGlass. Yes Tappi, the Minairons tank is all wrong per the rearview photo. The rear hull definitely had a shallow peak that ran all the way to the back, whereas their model is completely flat. The Panzer Garage kit is better, I think. Whether there were removable grates over the engine compartment is pure conjecture, but it's certainly easier to model it that way. The final version of this model will feature the two mysterious bumps. I just have to decide on their shape: flat topped, peaked, curved? I'll see if I can find some additional information using a different search engine. Perhaps yandex.com will provide data from a few alternate sources.