If you feel comfortable with doing so, why don't you PM me your team, moves, natures, held items, etc? I could probably help out with suggestions a little better if I knew all the details. *Nods*
Of course, if you're not comfortable with that... The best I can do is tell you to try to gain more countering skills. Have a general idea of what movesets the most commonly used Pokemon come with, and how you can counter them. Half the game is what Pokemon and Moves you have, but the other half is mind games, thinking through what your opponent is going to do. Just keep that in mind while tweaking. n.n
- Tyros