I got a revived Sansui 1000a with new caps ( replaced all oils and electrolytics) and new rectifier diodes. It is singing like a canary at this point but I am planing to to follow updates. 1) replace caned power caps- New multisection Vs. stuffed with modern single caps- Pros & Cons?? 2) Replace all Germanium diodes- replace with new germanium Vs. Silicon equivalents-- Pros & Cons?? 3) Mod to 4 pot bias circuit - mine is single pot bias- Pros & cons?? 4) Switching on & off tuner and MPX section while they are not in use by putting a relay or triac mod- Pros & Cons?? Any opinions and help is greatly appreciated.