Energy Support has not responded to my email about unspecified bushings in my kit. I wonder what the hell they're there for, but they didn't answer. I guess after the sale they don't care. Also the lube that comes with it is terrible, while it works well the material is very sticky and sits right between superglue and Elmers. Be very careful when applying the lube, use a flat blade or something similar to apply it, or you will regret it.,