Mods: 1st dirty stage cathode: 1k5//1uF MKT1813 (stock: 820R//.68uF) 2nd dirty stage cathode: 2k7//2uF MKT1813 (stock: 4k75 + 4k75//1.5uF tantalum) Coupling caps: 2.2nF+2.2nF, 2.2nF, 22nF TAD/Mojo Dijon (stock Wima FKP3 & MKS4) Tone Stack caps: TAD/Mojo Dijon (stock Wima FKP3) Cathode Bypass caps: Ero/Reoderstein MKT1813 PI Output Caps: 22nF Mallory 150 (stock 100nF Wima MKS4) Dirty Treble pot - linear Presence pots: 10K (stock 25K) R62 L Exc. resistor -> 250K linear pot (switch at L Excursion position) Mercury Magnetics transformers