I have read all the posts about cleaning skulls including the '5 hour European' but I have a couple questions. First off, I'm using sal soda instead of baking soda as it seems like this is the preferred method of gelling the meat. So, can you use TOO much sal soda? I'm having some stubborn meat on back of skull and around ear butt crevises that seems like its taking hours to try and remove this flesh, so I was wondering if I put more sal soda in if it would loosen easier or if it might damage the skull?? Secondly, which is better sal soda or baking soda for cleaning skulls? Thanks for any info!