Try short shifting and putting your foot down, you'll notice a severe lack in power if it's on its way out.
Maybe he'll set the fronts up again then, but I would of thought the setting would all change with new shocks on? I'm just presuming though. Hopefully not, win winIts the guy that done my FRSU that said i needed the new shocks and said it will be fine so no sure if hes just going to do it again or whatever, its just the front shocks.