Molding and casting is the one thing I do not do Wheeljack. I always do one of a kind pieces so each customer can have a unique custom. Sorry I could not help you. There are many more talented customizers than me that could probably assist you though.
Is it ok if I modify a blank action figure body with claw, then make silicone molds of individual modified pieces, and then make resin copies from those molds? Just asking because I haven't seen anyone here do that.