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that is why I don't have win7 or vista ,I use xp ,BUT I'm aware that everything runs fast in W7


I forgot to tell you the Blackhawk is one from many many proyect from a dude who also start a design and never could export a model, neither in makemdl9 ...does that seems familiar? 

I do have maybe a dozens (Maybe more) of abandon models from guys who can't at the end do anything else

I being analyzing your model and its 100% savable , Just work on those glasses and wipe out those little tubes I told you above , and try to remake the parts that are full of polys
BTW you have to set your model in meters the Chop is made in feets

     http://www.simviation.com/yabbuploads/wklj7756jmc54.JPG

these parts can stay like this

   

AAAAHHHHHH! Pink!!! 

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That's a rookie mistake...

Here's the simple way to get it right the first time...

If you are in the Left Viewport, you should be looking at the left (port) side of the model!