Portal M1 Abrams model is inaccurate

Sorry if i sound nit-picky im just like this when it comes to vehicles in military games but the Abrams in Portal has a 2 problems first the GPS (Gunner Personal Sight) is closed so the gunner would not be able to see anything and the other problem is that the rear wheel the sprocket is too foward.

This is not a priority fix we all know there is way more important problems to get fixed im just pointing out there is a issue in the model.