Try a stem with more height and less reach, or an adjustable stem. Try some bullhorn bars with zero drop in the middle--- mount them backwards. (You might have to saw off the ends to keep from hitting your knees, if the ends are long.) That will effectively give you a flat bar with slight drops on the ends. If you can tolerate NO drop, just rotate the bar so you have a flat bar with bar ends so you can vary your hand position. Mustache bars MIGHT work, but they tend to actually increase the reach in the middle, since most of them curve forward first--- they look cool, though.