'04 US STi. Anyone else getting corrosion on rear deck lid? Particularly at abrasion points where spoiler rests on deck. Also on interior and at weep holes on trunk and at seam between fuel filler and quarter panel (really tough to get to as the rust is deep inside the seam). I've had to remove the spoiler to treat the rust but it will need to be repainted in entirety. I'd prefer to keep the car original but having difficulty finding a used WRX or Impreza rear trunk to buy outright and go smooth (not swapping- car is unmodded and would have more value in original condition). The spoiler will need new contact padding as the original has deteriorated. Any ideas on a suitable material?