If it's working properly, leave it the hell alone.
I wish I knew who came up with the ridiculous idea of "recapping" equipment so I can kick them up the arse so hard their teeth go on fire.
So far I've scrapped a Prophet 600 and a JX-8P because of this "recapping" thing - both of them had been wrecked beyond all hope of repair by someone who had attempted to replace every capacitor on every board and had done an extremely bad job of it. The *really* annoying thing is that the JX was working to begin with and the P600 had a really, really simple fault - and nothing to do with capacitors!
Capacitors pretty much never fail. Where you do see failed capacitors, they are either cheap underspecified smoothing capacitors in switched-mode power supplies, or small ceramic capacitors that have had a DC bias across them (they turn into resistors, gradually).
Once again, if it's working, leave it alone. If it's *not* working, find out what's wrong with it and fix it. Don't just go blundering in replacing parts at random.