I have the Airtronics VG400 it has end point adjustments for the throttle, is this the correct setup. At high throttle with the trim in the center I adjust the high point end adjustment so there is a very slight bend in the push rod to be sure it is open all the way. For low end I set the trim to minimum and adjust the low end point so there is a slight bend in the push rod at fully closed, then moving the trim to half should give my idle setting. The bend in the pushrods is very slight I am doing this to be sure they are at the max in each direction the servos don’t buzz with this setup.