hhhmmm.... I posted a reply to this earlier and it disappeared......
Anyways (hope this won't double post..) Welcome to the board!
Buster is doing fine, he still has a sensitive stomach but mostly when he eats too many twigs, toilet paper etc etc. He hasn't been on any meds since then (going on 2 yrs ago).
I did change his food to Wellness Fish and Potatoe mixed with a bit of Orijen Fish and that seems to suit him.
Hopefully someone with more experience will see this post and offer you some suggestions.