I have a 1953 Farmall Super M. The brakes on it dont work right. I have the drums off or whatever you want to call them. The disk pads look like they are in good shape on it. Everything else in there looks crudy. The problem is that when you apply the brakes they are very weak and you have to really mash the brakes down to get the thing to stop. Dont know what to do from here. Thanks