when/if you need to take the carb off simply "losen" the pinch bolt a couple turns and then use the allen wrench and "push" the pinch bolt screw which should then let teh crb come loose a couple twist left and right and whalla the carb will come right ouyt eazy peazy also as ron said 2 stage idle is just a off balance needle setting bro no need to go camando on the engine just yet