TUNA,
You've made an old dog look real real good. I've found following your progress very rewarding.
I actually find the slight sheen on the armor more realistic then the dead-flat finish. I spent three years on an Abrams, and believe me, they didn't have a flat finish over the overall surface. You could go from dead flat, to a subtle sheen, to almost dowright glossy on one panel. I find that when we attempt to replicate this in scale, it gives a bit more variation to our colors, and in my eye, looks actually better.
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Just my two cents of course!
Looking forward to seeing the finished product.