DP paint looks really good.
On your mystery helmet, It looks like your Range Finder probably an RA replacement. I had purchased one myself and noticed when it was placed on the stock, it was pointing down, alot. What I did to correct this, if you haven't done so already, was to use the dremel and shave away inside of the head where the stock slides in, until it slid on straight. It was a lot of sanding and checking to make sure it was working and I did not overdue it. Goggles, and a mask, a must.