u/ExoticExtension3381

Hi All, I recently picked up a second hand Classic which already had Gaggimate installed on it (Pro kit). The machine has been well looked after, given its 6~ years old now, are there some things I should be looking at proactively replacing ?
I’m on top of routine servicing such as backflush and descaling, more wondering if there is o rings or valves that should be replaced every 5 or so years. Has no operational issues that I’m aware of. Cheers.