Customer called because he had noticed a cable head rusted out, and that his door was crooked. When I got on site, I was able to quickly figure out that the customer was correct, the cable did rust out and the door went crooked. Typed up an estimate for the customerto replace cables and bottom brackets because the bottom bracket is what causes the rust. Customer authorize the replacement of the parts once the door was leveled in and operational. It opened up and closed down smoothly and efficiency, without any openings on the bottom.