I have a 99 Passat Wagon that we recently had the brakes redone. The shop damaged the ABS spped sensor ring and replaced it for free. After that our ABS light went on and was found to be that the sensor itself went bad. After that had been replaced the ABS light went off but we get the fluttering action that happens when the ABS is activated. The problem is that it happens on dry pavement and sometimes a few times a day. This didn't happen before we got the brakes changed and was wondering if there is an adjustment time then it will stop or if this is a legit problem that needs to be fixed.