Hey Sean
You're taking this off the ground too fast. Slow down the first part of the pull off the ground. If you do that you'll notice that you're actually pulling the bar around your knees rather than extending them to break the bar off the ground. Your first move is to open the hips rather than straightening the knees. This opens the chest and then the shoulders get over/behind the bar too early.
Lastly, you have to get rid of the death grip you have on the bar if you want the elbows to come through faster. Receive the bar with your shoulders, not your hands. The bar should rest on the meat of the delts and be back in your finger tips.
Fix those things and see there's an improvement.
I'd also invest in some 25lb bumpers so you can take the lighter weight from the ground.
Good luck.