I think I arch my lower back too much when I'm lifting. Especially when I'm doing power cleans etc, I feel like I'm catching the bar with a very arched back and pelvis tilted forward and it's making my vertebrae crunch together and giving me pain afterwards when I extend my spine in daily life.
I think it could be partly because I have some strength imbalances in that my back is probably stronger than most of the rest of me.
How do I fix this? Should I do lots of glute and ab work to sort out my posture? Or are there tips to fix my form so I lift with a straighter back?