That's what I use too. I've got a 6" bench grinder with a wire wheel attachment. It work great for removing all the Carbon crud. Smallengineguy is right about those gaskets too, buy new ones before you remove the RAVEs. They tear easily...trust me, I know
Thanks For all the info. I am going to clean them this week end I will pickup some new gaskets before I get started. I made a copy of the RAVE Maintence cleaning instructions' its a big help Thanks again.