My fusible link is giving me nothing but problems. the plastic casing thing holding it has a bad spring in it or something, and it seems that the fuse is loose in the casing. I am about to replace it with a new fusible link, but I was wondering your guys take on these: Are they necessary? If they are, why is it in my best interest to have one? Can I solder in new wire to replace/delete it? Please tell me what you think. Thanks a lot.