Need to "refurbish" some Gamma clamps


I've got three clamps that i want to bring back into service as my backups supply has dwindled. I'm down to 3 serviceable clamps.

Most notably, need to replace the diamond dusted inserts. I know there was a thread regarding such awhile back, but cannot find it.

Someone was purchasing the inserts somewhere IIRC. I'll also check with Gamma, @Gamma Tech are these available via Gamma?