Have 2000 Wrangler TJ, MT, 4.0, lately it has not wanted to start or stop running. Mechanic says that I need a new Upper Steering Column, which by the way Jeep/Chrysler is not making and is on back order throughout the country. Mechanic also said that is what I am needing are actually plastic parts that fit together for the ignition (he calls it the transmission pieces?). Anyone out there hear of this or have a solution, besides taking the jeep out to the field and shooting it? Thanks for any insight.