On EVH 1968 Marshall Super Lead 100 1200 series the treble pot was 50K not 25K and the 56K most Super Leads Super bass was a 47K Eddie's was a 33K
all of Hendrix amps had that modification if you look at 1966 Super Lead 100 all used a 33K
both the 1967 Black Flag Marshall's I have owned and 1968 Super Tremolo 100 and early metal face 1969 used 33K stock
Jimmy Page 1968 Super Lead 100 used a 56K
Mr Dumble was next level he used a Fender CTS 2-35/250K treble pot measured 300K and if it measured 290K he would add a 10K tail resistor
devils in the details