Thanks guys.
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RobTC - Not sure what you mean. I've not seen any IM bicep done with, "riveted scales" and not even sure how they would help. The MKIV suit doesn't show anything other than a single piece. It is free at the shoulder and hinged at the elbow. The cardboard prototype I made before this one fitted well and allowed sufficient movement for me to scratch my nose or have a drink.
I would be very interested to see an example of your riveted scales.
SB