I was wondering if anyone has endeavored to remove and replace a bad key cylinder in a Ford Explorer. It is a V6, XLT, no air bags, does have a security system. I had 5 or 6 keys and now only one will fit the ignition. Pretty sure it needs a new cylinder which I bought at Advanced Auto Parts. I have a steering wheel puller. In reading some other literature on newer autos it makes me fear trying to do it myself. Maybe the older 94 Ford is easier. If anyone has removed and replaced a cylinder in a 94 Explorer any advice or tips would be appreciated. Would you recommending trying it or just letting an auto service company do it for me??