[DML] Steering rack stiction

[jwit6@xxxx]

My steering rack is sticking now that it's hot and I'm doing all of my driving with the air on. It seems when the car is cool, the steering performs flawlessly, but as it reaches operating temp on 80 degree days, the steering rack seems to heat up from the radiator and begins to exhibit stiction. The wheel sticks where ever you tend to put. I've pulled the pinion cap and loosened the spring tension on the nylon slider by adding 2 custom paper gaskets to raise the pinion cover, but it only delays the effect and makes the steering a little looser when cold. It's been topped off with 90wt gear oil. Any one else experience this feature? Any suggestions. 
Thanks,
Jim 6147