Nad 2700 recapping

Hi all,
I have a question about upgrading this amp.
Where can I get power Capacitors replacements for this old amp?

Power Capacitors 2 x 10000uf – 80v
Power Capacitors 2 x 10000uf – 120v

I found this upgrade kit (which I would probably get) containing
35 Nichicon audio capacitors KZ, FG, FW, KW but power Capacitors are not included.
Any directions or general thoughts about my plan (should or should not) would be highly appreciated.
BTW, The reason for the upgrade is that It makes some dearty sound from the speakers like bad contact sound from time to time. Do you think changing the Capacitors of a 30 years old amp might solve it?

My speakers are martin logan source.


Thanks