depends on what helmet you have. if it's an ILM descendant with a fixed stalk, then you should contact Asok. if it's a fan sculpt with a moving RF then you should probably get at Cruzer.
rangefinder and piece
I was trying to remove rust from the bolt in the helmet when the whole rangefinder dropped out. So I decided to get a new one. I'll try to get a pic of my helmet and the right ear cap tomorrow after work.