slow takeoff after sitting

Hello, I signed on just to see how many questions were asked and saw the question of after sitting for a while, the transmission is slow to take off.This is not normal! The first thing I would check is your oil level. If it is low, as it warms up, it expands and then would let your vehicle move. If the oil level is set ok, you may have an issue with a main pressure regulator pin in the valve body that wears, even sometimes breaks. This allows the valve to release main pressure. I usually see this in pre 1999 vehicles.
I will still answer any questions if you wish to send them to me at work when I get a chance to answer them I certainly will.
Thanks and have a great day! :)