I was reading a book I have on the TU-2 last night and was checking out the cutaway drawing on the TU-2 and noticed somthing I had missed (or dismissed before). The rear ventral gun on the TU-2 uses a perescope to sight with(as does the gun on the Pe-2). Remembering HTC's inabality to model the sight for the Ar 234, I wondered, Is this why we do not have a TU-2? It seams a shame this is such a fantist medieum bomber not to have it in the game.