my auto has been slipping and getting progressively worse so i just tried to change the fluid. i drained it than started filling it up but i overfilled it. i didnt think i had put enough in to have overfilled it. i drained some more out but the level wouldnt come down on the dipstick. so i drained it completely and the level is still way over full. like its plugged up or something. please help. im not sure what the heck is going on.