Reddit mentions of Pearl MFH10 10-Inch Mesh Head

Copied from alxmonkey's post on DMDrummer.com. I used Pearl's Muffle heads, as they were the cheapest to order in.

Undo the bolts and remove the foams from the wooden ring. to change the order of the foam you need to move the thick black foam only so I made a cut from the edge to the centre so the wire from the piezo didn't need cutting.

Make a small cut from the edge of the rebound foam (thin black one) to the edge of the metal disc where the wires naturally fall.

Put the white foam at the bottom, turn the metal piezo plate over so you can see it. Trim 1/8 to 1/4 of an inch from the edge of the thin black foam.
Put it on top of the white foam.
Put the thick black foam (with a hole about the size of a standard sellotape roll just like the HF video) on top of the piezo plate.
Mesh head on top of that and replace the rim.

You don't really have to cut the thick black foam, you can just carefully pull it over the metal piezo plate. They can easily be pulled over the 8" shells, but might tear a bit with the 10". Also, I didn't have to cut the rebound foam to the edge of the metal disc, or trim any material from the edge of the thin black foam. I just switched the order and everything worked fine. I can try to find the post that gives you an idea of how to adjust the sensitivity and velocity curve after the upgrade.

edit:
This conversion likely voids you're warranty (epically if you cut the thick black foam ring), so proceed at you're own risk.