it took me about a week to change food over to a lower protein kibble. I used blue bufallo lamb and rice, it has 22% protein. Now i finally have him on the new feed. He's been on it for a week and i already see improvement in the legs. He will be 12 weeks on 5-4-2011. I was planning on keeping him on this food to He's 24 weeks old and then I want to switch him to orijen puppy. My question is would orijen be to high of protein for my puppy because i dont want him to start knuckling over again? Also im still debating if i should crop or not what do you guys think?