Herbs/Mining Nodes Don't Respawn

Hey all, I’m having some trouble with my world. It seems like the Herbs/Mining Nodes don’t want to respawn, ever. Is there a line in the config file or something I missed?

they are pooled, they change of location to stop people sitting on same node forever.

Is there any way to pump up the spawn/respawn rate and such?

Here is an example where the pool_template is modified, researching this technique may yield some level satisfaction.