I bought a used 2018 GC 1720. I noticed the joystick seems a bit 'sloppy' compared to other tractors that I've used. The joystick runs thru a hole in the side of the tractor body with nothing supporting it but the rubber dust cover. I can't find a diagram to see if anything is missing. The joystick seems to work fine. Can anyone advise if this is the OEM set up or if something might be missing? Thanks....jkm