Par3n1- I don't know the mk2, but I believe the previous version used photoflash caps for the main B+. If you want better solidity and low-end authority, I'd replace these with Elna or WKZ Blackgates ($$$) with copper foil-in-oil or Rel Multicap bypass caps. Should make a very nice improvement. Then check on the signal coupling caps. Again, copper foil-in-oils (or Auric if you prefer film types)should provide a nice improvement depending on what caps Roger M. installed originally. Also, the B+ caps for the gain and driver stages will likely provide an even bigger benefit from upgrading/improving.
Power cord upgrade should definitely be considered if you're thinking about going this far with the mods. Hope there's adequate space to fit it all in!!! Good luck.
Power cord upgrade should definitely be considered if you're thinking about going this far with the mods. Hope there's adequate space to fit it all in!!! Good luck.