Hi Sheila,
It looks like your case histories might need some updating.  Are you testing insulin and glucose as well as ACTH?  The neck crestiness is more likely a sign of high insulin than PPID.  

I agree with your vet and with Trisha that Max needs more pergolide.  Increasing pergolide may or may not decrease insulin so it’s important to track both.  Section D Welsh are less likely to be IR than their shorter relatives but that potential still exists.
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