I'd recommend either F&T or Sprague Atom caps for your amp.  F&T use 22@500 for the caps in the dog house, 100@100 for the bias cap & 22@50 for the bypass caps. Sprague values: 25@500, 100@100, 25@50.  Looks like your bias has been converted to level from balance so replace the filters, set your bias & you're good to go.

Drewline