Hi Graeme @Trooper1972, Thanks for submitting your EIB application (again). We have put it in the queue and will be with you as soon as possible. For your centurion application, we will need a new post for that to keep everything organized for other members to look through.
Although not from R1 these are some close up cut-outs from the Makinarium UK images. They were one of the studios making armour for Andor.
It's always interesting when you start to look at what's in the background of workshop images. In this case you can see they are using some kind of lining in the forearms. Looks to have thickness to it like foam or neoprene type material. Possibly for comfort but to also assist in holding them in place.