I got my new trans in the car finally and following the instruction ( reputable trans builder on the board built it that I did call and leave a message with last night) and when I got to the part of running it through the gears with the car on stands I noticed after going from drive back to nuetral the tires kept turning slowing but still turning. I could slow them with my foot too. Is this ok and normal? I had to shut down dye to leak on my new cooler at a fitting spraying a fine mist of fluid so it probably still has some air in it maybe.