Two Camdenton men are injured after a brake failure yesterday in Camden County. Thirty-two year old Scott Malczewski was driving a 1988 Chevrolet septic tanker west on Highway V south of Lowell Williams Road when the brakes failed on a grade, the tanker truck careening off the west side of the road and overturning. Malczewski was not wearing a seat belt and suffered serious injuries. He was flown by the Staff for Life to University Hospital in Columbia. His passenger, 52-year old Wilson Porter was also not wearing a seat belt and suffered moderate injuries. Porter refused treatment at the scene.