Looking for a litle help. Have a completely stock and original 85 iroc with 60000 miles. I have owned it three years and put about 15ooo on it. Ever since I have owned it the steering is weird. Turns to the right real easy and takes freeway on ramps like it is on rails. Turns left with effort, and have to work to keep it around left turns. All suspension components are tight, and had the alignment checked. Could this be a pump or gearbox issue?