Electric guitar tone control can't dump highs anymore

Can't dump highs, replace a500k tone plus 103 ceramic 1kv, chk all solder jt, chk all conductor continuity, chk all grounding co connectivity, vol a500k works perfect with pss, just cant dump any highs, p90 s are very very raunchy

frustration : replace vol a500k alpha full size since carbon may be fatigued dialed in at 1.8-2.0 tophat knob graduation
 

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Replaced 103cap1kv replaced a500k full size pot, still unsuccessful, next, an attempt, replace a500k fullsize vol pot, maybe the zone always used 1.8-2.0 dial graduations for clean mode has preferentially ruined the carbon since track portion acting as load is so tiny