Recently a friend of mine who owns a repair shop told me that he was advised to replace two of his 2-post lifts because there is a -1 degree angle at the lift pads, indicating wear on the arm components. These lifts are 20-some-year-old Challengers and have been in his shop since new. The suggestion came from (surprise!) a lift salesman who apparently painted a lurid picture of possible disaster and liability for injury leading to bankruptcy.
My friend is worried. In my own history of auto, truck and heavy equipment repair I never ran into anything like this. I suggested that he get a second opinion from someone without a horse in the race. Comments?