Bonneville America Forums Forums Technical Forums Performance Mods How much should a re-jetting cost by a mechanic?

I put some 19" turn-outs on my 2007BA. It rocks, but I have some good backfire going on when I change gears. I am wondering if any of you know about how much it will cost to have a mechanic calculate and re-jet my carbs or whatever is needed to fix this for me. I am noob enough to not want to do it myself and be stranded on a ride if I f it up.