You are actually better off not using Hydraulics, place safety pins in the gear, disconnect the nose wheel scissors and you can actually position by hand the noseweel with the towbar for complex maneuvers. Are you at KOAK? PM me, if you wish I may have some resources for you. The hydraulic system is dangerous on that aircraft, I would suggest having a professional around. When the NLG is fully extended there is a cam that center's the gear, you want this aircraft as light as possible w/o worrying about the aircraft tipping on it's tail. . Steel plates may be overkill.