On the clean, the main thing is that you need to work on ankle flexibility and sitting straight down into that squat instead of back - Don't reach for the bar with your chest, bring it back to you and sit straight in as upright as you can.
You need to move the hips straight down as you dip, not sit back. Torso never leaves the vertical orientation during the dip and drive. Maybe even dip a little shallower.
Thanks for the help Greg, just recently bought your book and it's helped me remarkably. I know the ankles have been a problem and I have stretching them religiously. I'll try to dip and sit tomorrow and see how it goes!