I feel a need to start a discussion about Pewter, because reading the rules, I can't figure out a way to get its most interesting applications to work. Obviously it's a very powerful metal, but it's burn time seems far less than the novels indicated, probably for game balance. This part I understand and am okay with, but the problem is that in my opinion the most charming use of the metal is the unending endurance and accelerated healing it grants the user . . . and with 5 minutes per charge, neither application seems like it would ever see use in game.
A character would need to spend weeks and week of game time doing nothing but buying Pewter to ever have enough to induce Pewter Drag, and it makes the Inhuman Endurance trait simply useless because there's no possible way to ever use Pewter for days in a row. Even the healing bonus is gimped, because you need to burn Pewter for a minimum of 8 hours - a whopping 96 charges! Obviously the Unconscious Burning Stunt helps alleviate this, but even that's not perfect - you need to have 3 charges in your system to get the 9 hours needed to recover the extra point of health, but at the 8 hour mark the remaining charge turns poisonous and deals one point of damage, counteracting the healing.
It just seems odd to me that we'd have all the rules for Pewter Drag and other things Vin and other managed in the novels, but the burn time on the metal would so clearly make that a near impossibility. If 5 charges is a bar of metal, Vin would've had to have been weighed down with a quite literal ton of Pewter to run all day and night the way she did with the rules as written here, and I can't see a way to allow players to do the same without changing it.