servo recentre mechinism

[chromeblack]

hi, my old electronics board of my xmod caught fire and only the motor and servo were salvageable. so ive found a new board, but it does not have the connections for the recentreing componet, so any ideas for some sort of mechinism to re centre the servo would be helpfull. ive allready tryied springs and 1 side works butn there is nowhere to mount the spring on the other side.