HOW TO FIX IT AT HOME Luckily, adjusting the CR250's servo cables is not much more complicated than adjusting a clutch cable. Here are the five steps to getting your flapper valve to open all the way. Step one : Pull off the RC valve cover and turn the actuator counter-clockwise until it stops. Step two: : Push the left-side cable to the left. If you can push it to the point where it touches or almost touches the cylinder, it is too loose. Step three: : If the cable is loose, you will have to push the rubber cover on the cables out of the way to get a 10mm open-end wrench on the lock nut. Step four: : Using an 8mm opened-end wrench adjust the left side cable until it has a tiny bit of play in it. Do not make it taut. Step five: : Tighten the nut, pull the rubber cover down and put the RC valve cover back on. Now, enjoy the benefits of a fully open exhaust port. i think this article is missing something......what to i do with the cable on the right? if you tighten one you'll have to loosen the other and vice versa right? mine is way off.....way off. so i gotta know.