I could be wrong, but I would imagine there would have to be some sort of visually identifiable flaw that kept that razor from shaving 'right.' The fact that I couldn't identify it at 30x, and again at 60x doesn't mean higher magnification than I have on hand wouldn't more readily reveal what was wrong with the edge.

I guess you could say that, because I got the razor to shave properly without it, no - higher magnification isn't needed.

But I would really like to know what it was I was missing. If I knew that, it could be avoided in the future. Since I don't really have a clue, I learned nothing from the experience outside of 'Doesn't shave, back to hones.' So there's a significant chance I'll see a similar problem in the future.