Spent some time recabling this weekend. Sorted out both my K81DJ and SR-60s. The K81 I did to help reduce some of the bloominess in the bass and hopefully bring the midrange forward a bit.
24 awg stranded silver wire in a litz braid covered in heat shrink and connected to a 1/4" adaptor I bought in bulk off ebay:


I used Canare mini starquad on the Grados to tame some of the borderline harshness and help warm up the already beautiful midrange. As I'm an OSU alumn I decided to use some orange tech-flex over the black wire. It's a little stiff but not unbearable:


With the AKGs I do notice the bass energy better contained and what I considered a muffled mid-range has been brightened a bit.
I'm extremely happy with the result with the Grados: the harshness in the upper range is more subdued and I find the listening experience as a whole to be much more enjoyable. I will say, though, that separating the Grado cups was a HUGE pain.