HELP Need help jetting 2005 TE 510 JD jetting didn't fix it

[T-Bone]

Im in Vancouver Canada and i'm at sea level it runs fin with the JD jetting till you try to give it a quick shot of fuel. I know its no the same as a 2 stroke. But it doesn't even have to be that quick of a shot and the bike dies and makes a big back fire. I tried it richer and leaner but still no luck ... PLEASE HELP !!!! :bang:

 

[2 strokes for life]

You need to adjust you accelorator pump. I dont know about the TE510 but with the CRF450R you can put a o-ring from the linkage to the screw to give it more responce.