Yep, still too soon. This will happen, probably for months to come - if not years! There will always be a bit of sibling rivalry, but as long as there is no blood shed or serious attacks, let them work it out. Clayton will come to realize that Tucker is not a threat to his top-cat status and will eventually relent.

But overall, if you've had them together for most of the last week (seeing as Tukcer is aka Houdini) and there have been no serious all out brawls, I think things are going wonderfully.

Oh, and about the random acts of swattiness. My meek little Peanut girl who has never been top-cat sometimes, for no reason that we can tell, just hauls off and smacks Tubby - then runs! We think it's hilarious because Tubby always looks stunned like "what the....?" So I wouldn't worry about the random swats, and, like I say, they will probably diminish over time. 1 week is not considered a long time.