I haven't really noticed it since im just using that 2/3 of a chimney of kbb. i started using it because i saw a video on youtube with a guy saying that RO and KBB starts up about the same so he saves money with kbb but uses RO for other things. i will try the RO (which i love in the WSM) and see if i find a difference. thanks for the tip!Aaron, Don't you find that the excess ash of the KBB somewhat snuffs out some of the good wood coals that are so important to a clean cook? That's why I use RO briiqs to light my lump. 2/3 chimney at the beginning of each cook ain't a lot of money. Just my $0.02.