People seem to not be getting the idea.
Here, let me try to explain for the 3rd time. (or are we up to 4th, counting SPBogie's)
UNLESS you specifically add a stool to the ALLOWED list (which, Megiddo posted in his first post, and has since been modified to not include duplicate),
people will NOT be able to use Stools on jail.
There will almost always be exceptions, however, these exceptions will usually be due to incorrect stool programming, or, not be true stools.