I bought a used 99 2500 4x4 57,000mi on the odometer, with a 47re. Ive noticed that it shifts VERY firmly. I checked the transmission fluid and found it to be a quart high. Yes I checked the level in neutral, hot, etc. I drained the extral fluid. I checked with the dealer and the part numbers are correct for the tube and dip stick. Now the truck suffers from morning sickness. I don't know if the valve body was modified. Is there any mods that require an extra quart? I am thinking of putting it back in. Help!!!!