Did a trans drain and refill on a friend's 2003 subaru forester 4eat automatic. As I was refilling, fluid started spilling out the drain hole like it was overfilled. Car now slips in and out of gear. Every time I check the level (engine running, cycle through all the gears with warm engine) it keeps spitting up fluid like it's overfull. I'm pretty positive that the roughly same amount of fluid is in there as before now. Do these cars get air bubbles in them? Any tricks I'm missing? Right now, I'm just driving the car up on ramps, opening the drain, letting a little out, drive the car again, recheck the level... This is quite embarrassing as I just did this 2 weeks ago on my Saab without incident and got the level exactly right... ugh!