Hi tyson, just couple of suggestions so hope they help.
If your carb opening, upon release of brake on the Tx, opens slightly and slowly closes? -
- Is your idle stop screw set so that when you brake it prevents the opening from closing up? It seems your idle stop screw may not be stopping the carb opening and when you apply brake, it moves inwards closing the gap, then when you release the brake, it slides out from the tension of the servo and then slides back in from the tension of the throttle return spring. Is the spring on there?
- If you have the spring, check if it's not binding on anything especially the rubber accordion cover over the LSN.
- Also check if it's not getting caught with the Spur gear slipper nut. A friend of mine had his spring catching that nut when throttle is open.
- Also make sure your servo arm is level and parallel with the travel of the rods and not binding up anywhere. If your using the stock throttle/brake system, make sure the spring on it isn't too high tensioned.
- Whats the specs of the servo your using? Does it have enough tourque?
- Also I found that if I adjust the LSN ball joint by releasing the little grub screw under it (it's just below the ball joint of the LSN), so it's as inline with the throttle return spring, the carb closes and when brake is applied, it doesn't twist. With the ball joint a little off level, I noticed when under braking, the return spring, which isn't sitting level anyways, twist the carb a little making the Gap close up slightly.
Hope that helps. Just tossing in my few cents from what I have come across through my trials.