I got some new knives 2 weeks ago. I have used them to cut up about 50 whole chickens so far. About halfway thru this weekend, the knives got dull and I was unable to get them sharp again with a steel. Can anyone tell my if this is typical after this amount of use? I know I need to sharpen them with either a wet stone or mechanical sharpener to get them sharp again, but wondering if these knives maybe aren't as good as I thought they were.