Yes, The models needs a lot of post-printing work, but done in separate parts, sometines will help. It's the same as building replica models, sometimes it's better to paint separated parts, and then join them together.
I'll try to make an "extra" to the black parts close to the eyes, to put over the helmet in a 2mm layer, but with my 3D skills...cant promise anything good :D
And I'll never complain about this model. Is the best One I'v found all over the internet, just wondering if it can be even better. :D