Picked up a small dent in the door just below the mirror, had it removed by dentbusters. The dent originally was size of 10p and could be seen from all angles. Now if you catch the car in the light there is a 30mm long ripple where the repair was done, can't be seen when viewed straight on. Is this what you'd expect? or is it just a poor job. Can they really remove them witout any trace from any angle?