Program - its like twiiter just do an @ symbol before someones name.
Right ok, explaining time:
With the eye piece I actally cut off the eye itself and respectively all the eye ajoining tabs such as:

So all I have is the rim around the eye, so later once the helmet is resined you can add the electronic eyes easier, without cutting anything out
With the Grooves, I completely Change everything! instead of making the Groove walls and base and then attaching that to the top I effectively remove the walls and make the base wider


1st picture ignore the 3/4 pieces stuck together part. (made this pic for a friend ages ago)
Glue along the Red contour and then stick the top section onto the new wide piece lining up the side of the top piece with the line on the original groove
If that picture makes sense that effectively rues out this piece
The other 2 thin pieces unfortunly theres no way around them, im not sure what pare of the helmet that would be, maybe the top of the head?
Anyway, the way I do it is to score the grooves with my blade, then I fold up the valley folds first, then using my thumb and my other thumbnail I fold down the mountain folds, so you get the wall you need
Does this help? - my method does involve a lot of simplifying, as I do not care for any thin pieces, and yes I agree there are stupid pieces in the mk42 but hey ho