Bona42na,
I'd think the CBS would make a meal of the T.Percula if given the chance. May want to remove the CBS. Most WC fish tend to be less hardy than TR fish simply because they're immune system has been weakened from stress. Try feeding with garlic to help.
As for "making his life easier" do you have any corals? Lots of softies and LPS make great hosts for clownfish, but it isn't guarenteed that they'll host.
HTH,
Alex