Installed these on my whitefox yesterday with DSA caps and o-rings, fantastic muted sound and feel. Too bad they don't work on the keys with stabilizers, but otherwise they are fantastic.
riboUnfortunately at the time of designing the clips, Costar stabilizers weren't taken into account. That said, both Cherry plate and PCB mount stabilizers are fully compatible without modification. As you have found, cutting off a bit of the lip/skirt around the base of the clip makes them compatible with the super close costar stabilizer wires.
Glad to hear you're enjoying the sound and feel. :)