Positional regulation will most likely vary if you have alot of error. And without some type of timing equipment you're trying to fix things in the dark. So you'll get it timed out perfect face down, but crown up or down the beat error could induce different problems as gravity is now acting on the balance differently. So maybe your watch stops because the beat error is so large that it can't keep momentum going one way, or it starts losing or gaining time.
I recently had to re-regulate a watch that someone did it without a timing machine. The watch was within 3 seconds he said when it started running crazy and sounded funny to ear, like an old steam train. It had huge beat error and I had to eliminate it and then retime it in positions.
Without some type of timing equipment Its like trying to solve a 3 dimensional problem with only a one dimensional view. If you want you can keep trying, even a blind squirrel can get lucky and find a nut so good luck....