I put new shocks on the class A a couple of months ago. I do not know if Iwas just being cheap or stupid not doing it before. I was always told that a gas shock was not worn out unless it is leaking oil. NO WAY! I just got back from a canadian trip and the difference was night and day! No more bump bump bump on every tar strip and crack. The ride was quiet and beautiful. So just because someone tells you your shocks are good, go with your gut. I should have changed them a few years earlier. I only have 30k miles on her and she is a 1999. So if your ride is stiff, change your shocks. You and your wife will be glad you did! 1999 Ford f53 chassis by the way.