This is a simple yet reversible mod for TFP Prime that kills three birds with one stone; articulated hands, better neck articulation and no more gap between the windbreaker and top of the truck. First, buy one of these. You can get them at any place selling Japanese hobby stuff. They are around 600yen. The parts for each hand come on sprues and take minutes to assemble. Each sprue comes with extra balls for plugging in the hands. You'll need three. The hands are simple. Just pop off Prime's original hands and the ball joints pop in easily. You can pop the old hands back in at any time. Next, you'll want to pop off Prime's head and take the red ball joint out. it's attached by a screw underneath. Take one of the ball joints for the hands and pop it into Prime's head. then sink the post into the hole where the original post sat. The new post gives prime a LOT more articulation in the neck. The post is more exposed in this first pic to show it clearly but sits further down normally. The added benefit is that the windbreaker on top will now sit without a gap. The mods are fully reversible if you want to restore Prime to his "factory settings".