Mods: 1st dirty stage cathode: 1k5//1uF (stock: 820R//.68uF) 2nd dirty stage cathode: 4k75 + 6k8//.68uF WIMA (stock: 4k75 + 4k75//1.5uF tantalum) 2nd stage plates: snubber cap 680pF (stock: 1n)