A little extra of the ingredients won't hurt but you don't want it too watery.
Some fibres never get powdered but just chuck them in with the rest.

Don't throw the old mix out...it still has potential...you can just add more bark to it and carry on

Nice. The 2 pulls I did yesterday had no sign of spice btw, nothing. Shouldn't it be something?

Well you should see something after a night in the freezer, even if only a little.
Are you positive that you have legit mhrb?

The place I got it from wrote betula albosensis on the package I got, but ensured me that is was a camouflage and the bar was mhrb. Can you tell the difference?