I posted a problem with my new pool cleaner a long while ago. Got some helpful suggestions. When I first got my Dolphin it only cleaned the deep end, and barely climbed the walls. After running it 3-4 times and washing the bag in the washing machine, this thing is working like a charm. Must have had to work out the twists in the cord and maybe learn my pool. Thing cleans every inch of my pool now, walls, bottom, steps, really beautifully. Just wanted to share my experience. Just needed a bit of patience. I think running the bag in the washer once is good and of course setting the handle diagonally.
Thanks for everyone's help here at TFP.