I'm working on a mod that fixes a few things in the game, e.g. gives The Tenderizer it's intended effect, makes the Shady Hat repairable with Pre-War Hats, etc., and I'm trying to make it so the Burnmaster and Zhu-Rong Pistol is effected by Pyromaniac. How can I do this? Thanks in advance!

Not sure about the other stuff, but for the hat thing... Under FORM LIST, open the RepairHatPrewarHat list, then drag/drop the shady hat armor into the list. Then open the shady hat armor item, click the repair list dropdown box and find that list name, then save.

Just find in GECK PerkPyromaniacWeapons list and add there your weapons to list (just drag your pistol and throw it into the list).