Recently I have had a pulsating sensation occurring when I put on the front brake and the rear brake. It is if the disc or discs are warped causing a high or low spot with pads grabbing then letting go of the disc every rotation. It is very annoying and is not very safe. A work college told me that instead of having to replace my front two and rear disc on my FZR250R I could get them flattened if they were warped. He said his friend had warped discs and he had them flattened at a third of the price to buy new. He said they clamp them and put them into a furness to heat up to straighten them. Is there anywhere in Melbourne where I can get this done? Or could they get machined if they are not too thin?