I got the hydro adjusted. Just in case anyone else ever needs to know. You remove the access panels on the right and left side below the dash. You have to remove the flasher and key switch from the one on the right. There is a cylinder on the right side that returns the hydro to neutral. You remove the pin on the cylinder shaft and the spring clip that holds the cylinder itself in place and remove the assembly. Then you can adjust the linkage and reinstall.