Amp not enough power


Fellow Audiogoner's I had my Aragon 4004 Mk II amp tested by a tech and it only produces 203 watts @8 ohms and 380 watts @4 ohms. I remember this amp able to produce more rated power specially when it is driving difficult loads. Any suggestions or comments are welcome.
stateoftheart
If I have to replace these 4 power supply caps, Can somebody know an electronic supplier who carries 19,000uf, 80v screw type Electrolytic caps. These are hard to search even in the net. Your help will be appreciated. I located some electronic parts supplier but a minimum is required to order ie 100.
Use 19000uf,100v screw type Electrolytic caps.
Cap made by Sprauge 19000uf,100v.Price 24 dollars each.
Length 5 inches long.
Cap made by sprauge 19000uf,100v.price 15 dollars.
Length 3 inches long.
It is Availiable at teddss.com
Always use higher than 80v.
As a side note, one of my distributors sent me a new "price list" for the ARAGON (and Acurus) which apparently will be available again soon in 2010 models.

Indy Audio Labs is to be the parent company.
You can use 22000uF/80V (more common value). You can find it in digikey.com Example here:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=E32D800HPC223MD80M-ND

Another good source is mouser.com

example here: http://mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-Screw-Terminal/_/N-75hqz/

I'm not sure if you want chassis mount with one large nut or one that has two screws (digikey example). Check catalog picture before you buy.