Hey Dynamic - as a one-time Rubies modder myself I figured I'd chime in - looks like you've done a great job there so far. That's more padding than I've ever seen in one helmet before! I know we don't all have David Prowse-sized noggins, but wow! I'm amazed you can fit your head in there!
As for lenses, I think I ended up getting the same "shape them yourself" replacements you did as part of a lot I bought once. I found that really frustrating, too and so I just bought the largest pair of sunglasses I could find and used those instead. Fenix used to make replacement lenses, too - since you already ordered your suit from him it might be worth hitting him up and saving yourself the hassle of trying to located sunglasses that are big enough, with the right curve, etc... Whichever lenses you use, you might want to consider putting some mesh on the inside to hide your eyes - I actually used some flyswatters for that. Worked perfect!
Did you get rid of the neck flair? As far as I can tell you did. I know that my helmet didn't even sit upright until I boiled the neck a bit, so it's a huge improvement and really feels better when wearing it.
A few small things that really bothered me about my Rubies that I noticed you didn't get to yet are the nose ridges and squaring out the bottom of the grill, as well as the removal of silver plastic nose piece. The nose ridges super soft-edged and lopsided on every Rubies I've seen, and it's a pretty easy fix with some filler and filing. Same goes for the grill bottoms, which are rounded in the Rubies but should be squared. Of course, now that you've already got it painted up, it may not be worth the hassle and expense, but I figured I'd point them out in case you're interested. Removing the silver plastic nose piece, filing in the hole, and hand painting the area silver is super easy and really makes the helmet look a lot more authentic. I would highly recommend you do it as it's really only a half hour job tops.
All in all, good job! Bravo!
Mark