XRAY - Model racing cars

My servo saver in XB9e is getting to move hardly when a dust gets inside. On a dusty track there is an issue. I loosen the spring to lower the pressure, but this affects handling of a car while the saver is clean at the beginning. Dust comes between the parts of saver and makes scratches on them.

I bought a spare servo saver, which was intended for xb9 model (#352512), but is not the same. Servo arm of saver is lower then stocked piece. I would have to put a lot of shims to keep the servo rod horizontal, which I don't like.

Does XB9 use two different versions of servo savers?


Any advice to avoid blocking the movement of servo saver is welcome.

Thanks