Hey guys Ive got a problem that is kinda defying my logic here. When my truck is bone cold, like after sitting overnight or longer, my steering will be easy and smooth, very easy to turn the wheel, but after driving for awhile the steering becomes quite difficult, like the power steering is weak. At idle it almost becomes impossible to turn. It seems to me like if it was a power steering pump the problem would be opposite of whats happening. Any other suggestions of whats goin on or am I just thinking about this the wrong way?