As for all the other variables, that too is part and parcel to the game. We've all had our systems dialed in only to go "huh?" when it doesn't sound right, and it turns out to be just one of those variables doing it's thing.
It's just that what I've heard these fuses are capable of, and for the cost, makes me wish I've gotten them first since they're half the price I paid for the HiFi Silver Stars and that was two years ago. Prices have gone up with each newer version of the other brands and these PADIS fuses didn't. No newer and better, USDA ( Mom and three out of four dentists)) approved, along with the price increase. Just the same fuse and the same price.
All the best,
Nonoise