[Water Warrior 2]

Sounds like Alantf is on to the right answer. Also keep in mind to use top tier gas only. All top tier gas has a small amount of Techron(cleaner) in it. A lttle added cleaner will do wonders for the carb and keep you happy. Whatever cleaner you use just add according to the instructions and keep on riding.
I had an issue with the Vstrom once when I used a less than wonderful brand of gas. After a few fill ups the FI system was throwing nasty codes. Switched back to Chevron and the bike was happy again.