Just replace the clamp with a screw type (stainless steel) one.
My bike does it, too. Tuono's are notorious for having leaky clamps from factory.
+1, I had some slight seepage from there this past summer as well. I thought the worst but it was just the clamp. I made sure the hose was seated all the way on the tube and put a new clamp on, no problems since.
Four wheels move the body ... two wheels move the soul.