There's some space underneath the XL pads but there isn't as much play. Then again, you shouldn't need the mod with the XL pads.
If the twisted paper towel mod isn't sufficient then I recommend trying the rope trick version. Quarter-inch nylon rope is more resistant to crushing. Cut to 1.5-2" lengths, bond the ends with a little heat to keep them from fraying, and stuff under the upper and lower angles of the pads.
I have no idea about the lead times on the black pads.
Speaking of mods, the XL pads do have a little boominess about them (kudos to Val and V-Moda for keeping it to a minimum) so I've been experimenting with covering the bass ports to rein that in. Completely sealing them with electrical tape works too well (imagine that). I'm currently trying paper medical tape. One layer seems good for my industrial and EBM, two layers seem better for rock and metal.
I just remembered a way to get red pads to match the Shadow trim: sock mod.