If its your first time seeing them with the issue then I would recommend not bringing up any of the SSMs or TSBs, some dealers might see that as you having read about it somewhere and trying to get something fixed that isn't actually an problem. That said, if they don't find any issues the first check and you're 100% certain there is an problem, that's the time to say "look, I hear the clunk every day driving the truck and it's clearly an issue since I've seen others who have had their shocks replaced under SSM (blah), so please recheck using the information provided by Ford to properly diagnose the clunk"