Something else to consider, these fuses only make contact through a very small / thin line where the cone meets the hole in the contact tab.

Having battled poor contact on my 1980 SAAB 900 ( owned since 86 but now too rusty to continue ) take a 1/4" dia drill bit and , by hand, turn the bit to clean the hole in the tab. This also makes the contact area slightly larger by making a slight taper. To get really tricky, sharpen the bit to match the angle.