Try this dishcloth for example.
With the feather and fan pattern you're supposed to end up with the same number of stitches on your needle that you started with after doing Row 6 of the pattern row which is:
Row 6: K3, *(K2 tog) 3 times, (yo, K1) 6 times, (K2 tog) 3 times, rep from * to last 3 sts K3
If you follow that row to the letter, on each pattern repeat of that row you will end up with 3 more stitches on your needle. Anyone with any math sense knows that if you want to end up with the same number of stitches on your needle then for every YO increase you put in your pattern you should also have a corresponding dec. In this line of the pattern you have 6 YO inc in each pattern repeat and only 3 dec. That line should read:
Row 6: K3, (K2 tog) 3 times, *(yo, K1) 6 times, (K2 tog) 6 times, rep from * to last 9 sts (K2tog) 3 times, K 3.
This way, you have symmetry-by splitting the first (K2tog)6 times your project would be symmetrical.
The other two patterns I came across were for afghans and were similarly wonked, I even tried the baby afghan one and ended up with almost 200 stitches on my needles when I was only supposed to have 159.
I'm working on a pattern very similar, with minor differences, that I will be posting to my Pattern Blog very soon. If I write it right then even a beginner knitter should be able to follow it.