I've an '97 Fortress and an '02 Infinity SN.
The 2nd fret on the Fortress B string (C#, metal boys!) is a little flattened and could do with reshaping. Other than that, it's great.
The Infinity, less so, but only because Warwick were using lower quality parts.
I had 2 E- string tuners strip their gears and spit out their tuning posts, and the JAN III fell apart like they all do.
Tuners replaced with licensed Hipshots. Brass JAN II now on nut duty.
In summary, hardware more of an issue on 00's basses, but nothing beyond the realms of DIY.