
It was me that mentioned the tripe.
I took the vets feeding advice over the breeders and fed Buster on complete puppy food (breeders instructions was junior complete with tripe DO NOT USE PUPPY FOOD). Buster feet started to turn out, he went down on his pasterns, developed a limp on the front leg (which turned out to be ED) and had trouble using his back legs, it looked like he had bad HD. But no problems were found with him other than the ED in the 1 elbow. HIs walking was so bad he could hardly make the 4 yd trip for the kitchen to the livingroom.
I got in touch with Busters breeder, who thankfully didn't get mad at me ignoring his first advice, he gave me a new feeding plan - tripe & plain terrier biscuit, he swore it would rectify the walking problems, pasterns & turned out feet. It was a hard decision for me to make as I couldn't understand how tripe & plain mixer would support the nutritional demands of a growing giant breed, but I put my faith in the breeder and went with his advice. The vet had told me his legs would need opperating on to straigten them out - how wrong he was - within a couple of weeks of the breeders new diet and Busters feet started to rectify. A few more weeks and I switched him onto adult complete & tripe (he was about 6 months old by then). Now Buster is 18 months old and his pasterns are fine, his feet are turned out slightly but nothing to worry about anymore.
Once you have a pup with growth problems, feeding them seems like a mine field.
I hope Teri's post has given you a bit of confidence back, I can imagine how daunting it must be making the decision to switch your big pups diet.