How is superfil used and where is it found? I have made a mistake on my SS7 and am trying to figure out the best way to correct it. I misunderstood the door latch installation instructions and mounted it on the door frame of the fuselage. I then cut the door frame angle (part # 52952.000) to fit around the door latch. I have since removed the door latch and fitted it to the aluminum door frame as it should be. Now I need to figure out how to repair the door frame angle piece. Can aluminum be soldered or is superfil something that can help? I will call the holes drilled in the fuselage lightening holes. Hope others learn from my mistake.