Long time ago in the mists of time (early 80's) we used to polish off the plating on ordinary fuses and yes we felt it made a difference. Rediscovered this when removing the plug on amps that are going for sale soon. This fuse was polished around 1981 and has not tarnished much if any. Photo may not do justice to shine
Try it and comment, I think I used Brasso
Regards Norman

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