Servo

[tyrewq]

on a slightly different topic. i got an emaxx with hs-645mg servo. it works fine but after a while the screw that link the servo gear to the steering handle loosens up and i have to tighten it back to steer again. is this the original intent of the design so the servo won't be damage by hard hits or turns(hitting objects at an angle)? should i buy another servo or steering gears/handle?

is there also an all metal alloy servo available for the emaxx? i thought hs645mg was all metal but when i open it it has one plastic gear and the rest metal.