There isn't a squat in a power clean. Do you mean hang clean? I'm no expert but to improve on your cleans you can disaggregate the issue and work on your limitation. If you clarify which version of the clean you're doing, I'll see if I can fish out some beginner tips for you since I've been getting them from my coach more or less continuously (so much to work on).
And Jerry, Rene is right. SS is a series of warmup sets followed by 3 across at the work set weight. Do you have the book? Well worth getting.