Are you checking top line stats in cgminer/sgminer or individual GPU stats? The top line contains a known error as some miner software has issues with some of our pool responses and counts normal responses as rejects - but they aren't really rejects so it doesn't associate it to any GPU. Top line can show inflated rejects this way and per-GPU stats are what you want to check.
I don't understand about 70% of what you said, but I did figure out my exact problem. I have this card overclocked more than it's pre defined overclock and I forgot to set it back to default. Once I set my GPU back to it's default settings, I've hardly had a reject since. My accepts have almost caught up to the rejects now. I guess the card putting out tjust that much more power was messing things up for me. The best part of it all is that putting it back to default seems to have givin me a little boost in kh/s as well. I was getting around 525 like I mentioned earlier. Now it's sticking at a solid 572. Hardly goes up or down from there.
Now I know what things need to be at (including my GPU not being overclocked a little more than it is out of the box) will give me the best results. I'm really happy I found this pool. Everyone is very helpful here from what I've seen so far. Thanks for the help everyone! Happy mining! (for now, I go to sleep.)