Does anyone know about their credibility? I found some sliders a few months backs & really liked what they had. I told myself I was going to purchase them as soon as I got my bike. I was going to purchase frame, engine & axel sliders but I couldn’t find it anymore. I called them & they were gonna return my call after they spoke to the engineer. Apparently, this whole time, the parts weren’t compatible ?♀. Has anyone had this issue too?