I know this is going to be hard to hear because you want to bond with the new kitty so much. However, from what I have read about introducing new cats to a household and especially one where the resident cat is an only cat you should NOT be cuddling more with the new kitty.

Zam is the resident cat correct? If I am wrong here then please disregard. If the bedroom had always been Zam's territory then it should remain that. The new kitten should be in a room that is more neutral than the bedroom. If that is not possible then you should purchase a large cage and place the kitten in the cage until the two get along. Also you should be cuddling and giving the Majority of your time to Zam. Zam is just feeling jealous and like he has been replaced as top kitty in your affections. This is making him act out at the kitten more. Zam is just trying to protect what has been his/her (I am sorry I don't know if Zam is male or female)territory. He wants all his mommy's attention back and not on the little intruder. I just know that this is difficult because you want to socialize the new kitten. But there will be time for this once you get Zam to accept the new cat. You just have to look at it from Zam point of view. He only had to share you with Kia. Now there is another...

There are some very good books out there about introducing new cats or talk to your vet. And try the Rescue Remedy to calm things down if you can. But try to make Zam feel as if ZAM is the important only one and this new kitty is secondary.

Denyce