Before you start adjusting the cables, I would verify the operation of the control. You do not pull the lever out to operate the throttle only in neutral. You push the black button in and push the lever forward to throttle up without shifting. When you pull the lever back into the neutral position, when it clicks into the neutral detent the black button will come back out and forward or back movement will now operate the shift cable before engaging the throttle cable. If you do decide to take the control apart, be careful, as there are springs and the detent ball that may pop out of place.