Help me out here. I have read every thread on litecoin mining and the 7950 gpu.

I have a msi 7950 twin frozr. I can not get above 8129 threads. I tried the GPU_MAX_ALLOC command, but it did not do anything for me. Right now I have to run 2 gpu threads and I am getting around 550 kh/s, but I feel like I can get a lot more out of this card. Has anyone fixed this problem? I searched the board and it seems some people have this prob others don't.