I just contacted Baja Designs and was going to buy the jetting modification kit. I was told they don't carry this anymore. They only have the Dyno-jet kit. I thougt the Dyno-jet kit didn't cure the popping and hesitation problems. I might be all wet on this but didn't the mod kit have some info on the accelerator modifications along with the correct jetting information to fix the lean running condition? Can anyone help me here? It is finally getting warmer here so I am looking to uncork the beast and have some fun. Right now my DR650 will run circles around the XR.