When making tools like tinker tools / tongs / saws / skillets etc. or anything thing that allows a GM mark option there is a simple little trick to double the charges.
Step 1 - Open your craft menu set it to " Prompt for Mark "
Step 2 - Make the item and will be asked " Do you wish to to place your maker's mark on the item? ".
Before you hit yes click the item made once to see what the current charges are then hit yes on the pop up menu and watch the charges double!
Step 3 - Show me Vast Reputation and Grand Eliteness

Its actually a very old bug that I just remembered about when making skillets to train up a cook and still works as of yesterday. Hope it can be helpful to someone else.