Klipschking, there is a thread about this issue already running. One of the guys -- was it you?? -- provided a link to a site that described in detail what was involved with "reconditioning" a NAIM amp. This included changing out caps. Notably, comments were posted that stressed the point that if you suspect the caps need replacement, other components may also need replacement as well in oreder to bring an amp back to spec.
I hold where Jeffrey is. But the only other point I add is that why not call the factory and ask their advice. OTOH, as I said in the other thread, maybe after 10 years the amp should be looked over by the factory to ensure everything is up to spec anyway. Just a thought.
Good luck and enjoy. If you decide to be the Maytag repairman, be careful not to get hurt. Electronic gear may store some high voltage charges. Personally, I wouldn't mess with it, but that's me.