Hey Jeff
Narrow your stance a bit. About an inch on either side. Quit squeezing your ass at the top before and after each rep. Get the low back set in extension and keep it there.
You're searching for depth and it's killing any potential bounce you'd get to help you out of the bottom. Get your knees out, bury it, and "bounce" off the hamstrings. Record yourself to check depth and adjust accordingly. But this will eventually be the limiting factor in squatting heavier.