I am a committed do it yourselfer. Converted my cargo bike to electric myself. Right now I am trying to bend the back of my 48" mower deck back to not drag the ground, and stay that way. A $550 problem, plus the OEM design was subject to snapping down to drag as sold. Brake pads are a $10 problem. I bought mine on e-bay, since there were 999 models of metallic ones on modernbike.com and universalbikes.com . Organic stops faster, does not require as much force. Metallic is for downhill racing IMHO.