Firstly, where are your talents, exactly? If you have both Bestial Discipline and Go For The Throat, you shouldn't be having too many issues with focus. Do you leave Claw on auto-cast? If so, that's probably your problem. Take it off auto and just trigger it manually when your cat has some excess focus.
Did you give your kitty Cobra Reflexes? It may not seem it, but that skill does add some decent DPS. If you're doing a lot of instances, you should probably consider Avoidance as well.
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I respecced but the results are not as good I had hoped, maybe I borked it alot, I know I did a little as I lost Prowl.
If your focus is on end-game PvE content, Prowl is no loss. I've never regretted dropping it on my cat. If you're PvP, however, I've heard it can be quite useful (don't quote me on that, I've never even stepped foot in a BG)
When it comes to pet skills, don't freak out if you don't get them quite right the first few times. It's not like it's expensive to reset them...