Originally Posted by
Hayden-William Courtland
These don't look that hard and I am not seeing any egregious technical errors. That said, you are back on your heels a bit as you note and you can probably fix this by leaning over a bit more at the start of each rep. Your stance also looks a touch too narrow to me, though I can't say for sure at this angle. But it might be worth going a bit wider with your feet and shoving your knees out HARD in the bottom. Hard to say if any of this is contributing to your back issues. Do you have a history of back problems? What are you deadlifting these days and how to those feel?