The sooting deal I read somewhere long ago and did it and it worked on everything elso so I just stayed with it, hasn't worked with this mold for me, I actually have a professional bottom pour, a hot pot and a ladle...My bottom pour needs opened up a bit, its too slow, so i have been using the ladle...the hot pot needs an element so I can't use it rt now, I will try gapping it later this afternoon and see if that works, I generally set the mold on the pot, it has a built in holder, so everything should be ok but it isnt, it actually pours best before it heats up, but I can't seem to duplicate good pours yet....I appreciate the response I will figure this thing out. thanks