order a custom cam they said,

No, I am serious. I have thrown away lifters too many times to count. It would be great to be able to reuse them. Thing is, I have NEVER heard of this before. Sure, Schubeck used to make those ceramic coated solids that could be reused, swapped to different lobes, etc but a regular lifter like this?

Yes, cam grinders can touch up lifters.