Thanks for the suggestions, everyone.

We've done a fecal float, numerous fecal cytologies and a Giardia SNAP test. The cytologies prompted us to treat him for bacterial overgrowth (clostridium & spirochetes) for 2 weeks as I mentioned before....and since then his stool has continued to be loose...

We had one PERFECT poop about 2-3 days into using the Prozyme...but that was the only one! So I think the issue is more than just digestive enzymes...

I'm not really sure what to try next. I guess I should address food sensitivies since I feed him a wide variety of meats, carbs, and veggies....

.....I'm pretty close to shaving off his bum fur and the feathering on his rear legs cause I just don't have the time for all these butt baths!