I had the problem with power cleans for the longest time as well. Only in the last few months have things really "clicked." Things I personally toyed with was the start position and where my feet/shins were relative to the bar. I also really tried to slow down my first pull, which was screwing up everything else because I was trying to rush it.
Do you struggle with cleans as well? I'm remembering you don't, but I could be wrong. A good progression for power cleans I think would be halting deadlifts(clean positioning), clean pulls then power cleans.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."