AH, I had the same thing on my Zona. Try-All stem with Adamant bars. Try tipping them up vertical if they are facing foward. If you want to buy a new set of bars, I'd get something like Monty TI, Try-All Rage or Viv Maxbars, something like that. Bar position make a big difference, if you tip them back so they are pretty much vertical, then it will feel wierd at first but when you get used to it, it's much, much nicer.