Hi,
I fitted a Tamiya 'high torque' servo saver while building this car. It reduces some slop but gives terrible ackermann, and there is still plenty of slop in the rest of the steering so in the long run I will fit the stock part to get a sensible geometry.

Right now it does look as if my problem is that both servos that I have tried are not returning to center. I have tried two receivers and have a regulator so the rest of my electronics should be fine.

I will try a few servos on the bench before fitting the most reliable one.

My only other idea is that the amount of slop in m-chassis axles is allowing the car to stay cocked to whatever side it last turned.

Duane.

Mystery solved.

Its taken three evenings and countless set up changes to work it out, but now I have a car that brakes in a straight line and can be nicely balanced through the corners with the throttle.

It all came down to a single screw. To cut a very long and frustrating story short, the servo saver screw appears to have been causing the tiniest amount of binding around the servo center and of course, every time I tested a servo I did out of the car with any old servo horn so never saw the problem.

I will leave the car alone for a few days, I am a bit sick of looking at it, but the weight saving you get from a Lipo makes the M04 hugely tunable just by moving stick on lead around.

Duane.