My Trim brake valve behaves like a switch though it is supposed to be proportional. It is being used with Trim brake hubs. If I go into the radio programming and advance the servo just 1% of travel at a time, the brakes still just jump from nothing to fully on. Has anyone got a Trim valve and know what the problem is? Also with the valve at the "ready position" next to the braking point, the spring load is very high and the servo is struggling all the time to maintain position, does yours behave like that? The spring load is so high once into the braking zone that the servo is bouncing back and fore against it. Sometimes the valve does not feed air to the brakes but just dumps all the air from the tank out of the vent which is rather worrying when you apply the brakes and nothing happens! Have I got a duff valve or are they just not good?

H.