Hi guys, I need some help hooking up my throttle control rod. I have a super tiger 40 ringed engine. when I hook up the control rod to the engine and then adjust it to the servo, it closes the carb like it should but to give it throttle ( to open the carb) it only opens a little over half maybe 3/4. I've looked and tried everything I can think and can not make it open all the way up with out it changeing the carb at the closed setting. I'm new to setting one up and cant seem to figure it out. The transmitter is a Hi Tech 4 ch. with standard servos, not sure of the #'s on the servos. I hope some one can help me. thanks for all the info you can give..