My 458 feels twitchy on highway bumps - is it just me being paranoid?

[wilberforcejagger]

I've owned my 2012 Ferrari 458 Italia for about 18 months and it's always felt incredibly planted, even on Dubai's less than perfect roads. But over the last few weeks I've noticed that when I hit certain expansion joints or patches on SZR, the rear end feels like it steps out slightly, almost a micro wiggle that corrects immediately. No warning lights, no noises, but it's making me less confident pushing the car at higher speeds. I've had the alignment checked twice and both times they said it was within spec. A friend who tracks his 488 suggested that the original shocks might be getting tired internally even if they're not leaking, and that can cause exactly this kind of vague behavior. I've been researching specialists who understand Ferrari suspension geometry and can actually test the dampers instead of just looking at them. I found a service offering Ferrari suspension repair through https://suspensionrepairdubai.ae/ferrari-suspension-repair/ and they claim to come to your home with diagnostic tools that can measure damper response. That sounds way better than dropping the car off at a dealer for a week. Has anyone here used a mobile specialist for Ferrari suspension work? I'm specifically wondering if they can recalibrate the manettino settings after replacing any parts, and whether they use OEM Sachs shocks or something else. Also curious if they do corner balancing on site or if that requires a shop. Really want my confidence back without spending a fortune on guesswork.