Now that we have Rocky on Prozac for his peeing issues I have to say that stuff is wonderful (knock on wood). He's a very sensitive cat and would get upset if the other cats got too close or touched him. He would also stalk and attack Scout but now on the prozac he is one laid back guy. In fact, he's more playful like he used to be as a kitten.

I don't know if medication is something you want to consider or if it's even something Taz can have after his problems but if all else fails you might want to look into it. Of course you have to medicate him daily so you'd need to consider that if leaving them alone.

Have you tried Feliway? I use it and I think it helps but I can't say for sure. When my supply runs out this time I'm going to stop and see what happens.