Yup, went out to combine some sunflowers today, daytime temp about 17 degrees, roaded the combine for over two hours, before I left I unhooked the header onto my trailer, and it gave me a hint of hydraulic noise that started when I lowered the header...the oil was still pretty cold. My dad moved it and had no problems....when we arrived, as soon as I lifted the header back came my very loud hydraulic whine followed by the steering locking up. This continued for and hour maybe close to two hours, noise when I steer, if I raise or lower the header it will "spike" the sound loud, and most of the time locking up the steering to where I had to stop cause it would not turn at all. At on point I lowered the header maybe 6 inches, the steering got loud, locked up, reel stopped and all kinds of herendous noise, and oh ya, the header wouldn't lift or go down or anything. After a few hours and it seemed like the oil warmed up it quit and all was fine for the rest of the night. I'm about fed up with this thing. It was also the first day with our new 590R and I have to say it is very impressive. we had a 480 before and there are quite a few improvements. I think my combine is getting traded after the season, but I'm not sure I will give New Holland another chance. Time will tell. I've very frusterated and this has been very disappointing.