You might not like this suggestion, but try checking out the Schluter
websight www.schlueter-systems.com and look into something like the
"Dilex-HKW" piece that might be a better transition from the 12 X 12 to
the 4" tile. You would have to tear out the existing grout and metal
piece you have in there now and re-install something like that, but you
might not want to go with that route. It looks like a bad situation
that might get worse. sugar coating it and not fixing the real
problem, which might be behind the tile or wall, could cost you more in
the long run.

Erik
Spend more time with your family
http://urbiz.stayinhomeandlovinit.com