hello. i have a 2005 chevy trailblazer 4x4. I have a leak where the powersteering hose connects to the rack and pinion. I pulled the hose and replaced the o-ring that is on the flared fitting of the hose and still leaks. Researching other threads i see mentions of a cup seal in the rack & pinion, i do not see a seal in the rack. any help?