The Genesis section of the L&L manual is a reprint of the Bartlett document. It gives a first firing example of a fast glaze fire to cone 04 or whatever cone the manufacturer included for that initial firing, but notes one should follow the kiln manufacturer's instruction if different. L&L provides self supporting cone 5 cones for the initial firing, but also calls for slow bisque, not fast glaze. I doubt the kiln is irretrievably ruined because of fast glaze vs. slow bisque, but my understanding is that the L&L special coating on the bricks needs more that the 04 firing that Skutt (and others) specify. (And yes, you can get out the popcorn when the Skutt crowd starts arguing with the L&L new owners about this in the Facebook groups...) The only thing I would add, mostly for the general edification of anybody reading along here, is don't rely on exactly what happened in the first test firing of an empty kiln. A full kiln will respond differently. Use cones even with a controller to ensure that the controller and thermocouple are working together properly to produce a consistent outcome. After several firings to develop an average of different loadings, tweak the offset as needed to perfect the controller. Keep using cones forever as things will drift with age. Y'all get back to work now.