Tiger Sport 850 Sport Bar Risers

Hello to all out there, anyone got any info on decent bar risers for the tiger 850 sport?, I just can't seem to get comfy on the bike, I get a ache in my shoulders and back, I've played around with seat hight adjustments, and handle bars, but I think I'm leaning to far forward causing the pain. I'm not tall, just 5' 10" and can easily flat foot it on both seat hight adjustments. When I took the bike out for a test ride, i never noticed it, but now I own it and commute on it, which is about one hour fourty mins, I feel it when I get to work. I'm thinking I need to be more upright, any ideas anyone???