Our 93 leaks fluid from the power steering reservoir. It comes out under the lid when the engine has been turned on. This is been going on for a while and it's getting progressively worse. I've gotten different opinions about what's wrong with it but I could use some expert advice from you all here. It's steers fine as long as there is fluid in the system. The only other connected symptom is it clicks when the wheel is turned hard in either direction. It's been suggested that it needs a new rack and pinion or a new gearbox or a new pump. Ideas? I replaced the cap on the reservoir a couple years ago and that helped temporarily.