I have been using my RO helmet and had only got round to tinting the lenses. But am glad to see there's plenty that can be done!
I'm with Dan though, curious to know how you sealed the vent and battery pack so well! what stuff was it you used and what spray did you go over the top of the helmet with to keep it all the same shade (off-whites are so infuriating)?
Great work man, keep it up