How fast are you going, that may be part of the problem. You need to be going about 30-40 maybe even 50, rev up to about 6K dump it and see what you get, if nothing, try 7K, then 8K and so on till you get it up. I am not a wheelie type person so I cant give you exact numbers as far as speed or RPM cause I dont do it enough, when I would do it I would just go by feel, but I tell you the bike can do it. With your gearing you can also power it up in second. Get up to about 50mph, chop the throttle and then open it up while giving the bars a pull if you need to. I am not sure on the speed of 50, so play with it and see what you get, the point is your bike needs to be in the power band so that is where you want to start to bring it up.