So this Saturday I´m going to travel 1700 KM to pick-up a mint condition B-2, together with mint C-2 and mint T-2. All from first owner with manuals, so that's great. The C-2 will most likely go to someone else and I'm going to pair the B-2 with my C-4 to drive the NS-1000M's. I'v done a lot of reading about the B-2 and there are 100's of ideas on what parts to replace to protect those VFET's before putting it into rotation. I'm going to use the B-2 daily in my main system. It will be on for at least 4 hours every day (is that even a problem?). I don't want to do complete overhaul just yet, but I want to replace everything that is mandatory to protect those VFET's. According to the seller, the B-2 plays completely fine at this moment. What I think I should replace / do: All electrolytics on the power board At least 2 Zeners on the power board (why not all?) All 2SC458's (also meter board) 2 BP electrolytics on the driver boards All possibele VD1212's with two 1N4148's in series Protection relais Clean all switches and pots LED upgrade (has nothing to do with VFET protection) Replace the binding posts (has nothing to do with VFET protection) Is this all it takes? Any other suggestions or corrections?