Cheap Plastic throttle!Need a new one. and help.

I new this day would come but, let me explain. I had those plastic throttles that came with my Dax
F70 kit. Today my throttle was sticking on me, and when I took it off I realize the plastic part was all messes up! Is there any Metal Throttles? Or anything I can substitute with? Website links will be prefered if you can. Thanks a bunch!