re: Edison wedges? Any experience?

I have the 49,53,57,and 60 degree. Actually bought 2 of each since every time my grooves got worn and I needed a new set, they had stopped making them. Scor, then Hogan TK, now Edison. Edison is different than the first two, in that it’s perimeter weighted. They’re awesome around the greens, like the others. Because the sweet spot is in the center instead of towards the bottom, I lose about 10 yards on hard, tight lies. Because of that, I’m still trying to figure out my yardages with these clubs.