The right side bushing was cracked, and came out in two pieces. The spring was very lightly collapsed from age, and the steel shim was good The left side bushing was appeared OK, but the steel shim was smashed and cracked in pieces. The spring was also very lightly collapsed from age. I believe the springs and bushings were the originals. The truck has 115,000 miles on it. Are these broken parts a sign of abuse or could it be considered normal wear and tear?