Solid cam damage diagnosis help

PRH said
No oil band(smooth body) means no edm hole.

Not that it necessarily “needs” the hole.

But...... if you want the hole......you need the oil band of the AMC lifter to have a way to get the oil inside the lifter to feed the EDM hole.

Thanks for jumping in, I couldn't remember the description he gave. My first set was EDM, I'll just go with what he suggested, said it wasn't necessary.