I believe I have the wrong cable!!! I've built 250 R's ground up, banshee's, warriors, blaster, 400ex's, LTR 450's.....on and on and have NEVER had this trouble. Even if i use no spring in the throttle housing I should be able to adjust out the slack! I mean I have 1.5"-1.75" of aditional cable lol. I guess I will call Kevin at HJR and beg him to send me out another one, I'm sure he will...excellent customer service!!!!! I even took the adjusters out of the carb tops and tried every thing....it just isn't happening.