My kitten Oliver has had diarrhea since we got him about 5 weeks ago. He's been on Floggl (sp?) twice, with limited success the first time. We've had his fecal tested twice, coming back negative both times. We moved him from purina, to a limited ingredient diet, to imes, which we started Saturday. However, nothing seems to help him. And the vet doesn't know what's wrong. Any suggestions?