Erik, you seem to be quite an expert on these modifications. Right now I'm looking at a schematic of the PV-12; I've already replaced the electrolytic capacitors with Black Gates, when they were still selling them. Which capacitors do you suggest replacing? I had good luck in a speaker crossover with top of the line Jensen poly caps. The PV-12 I'm looking at wont work unless I get a transformer.
I imagine you have a schematic as well; are there any specific caps that you recommend replacing, I always use the same value and voltage of course.
BTW I e-mailed Chris, and told him that you recommended him; I even got a reply; this is just the beginning.
Those of us who are handy with a soldering iron can go a long way on improving most components in our rigs.
Good luck on all your future mods.