Wadia-9 Recap

Did anyone replace all capacitors for Wadia-9's power supply & DAC? If yes, what is the result?
After around 15 years of non-stop operation(switch on all the time). The legendary Wadia sound (Thick & dynamic) seems decrease a lot. I'm thinking may be most of the capacitors have dry out. So, I'm thinking to recap all the original capacitors! Is it a good idea? What potential problem will be occur? Can anyone give advise on this issue?