I had some issues like this. I found that there are a few things that can cause this. Firstly, would be the 4 screws that hold the drive sprocket hub onto the transmission. If the splined shaft is not seated in the transmission properly, it will cause the driveshaft to protrude too much, and cause sprocket rubbing on the inside fenders. Secondly, the little hubs that fit inside the sprockets might not be seated properly. On one of my Leos, this was defective (new kit too) and didn't seat properly. I had to replace the small hub that (the aluminum one) that the sprocket screws go into.