Good progress, Nissan!
I personally take a wider grip on the bar - almost out to the sleeve. You might find it helpful in getting a bit more stability in pulling the bar across your back from this position.
Bonus points for the diaper.
Will that make it harder to keep my back tight?
Today I hit 420. I still have trouble keeping the air in my lungs. I just cant keep my self from letting air out on the way up and it makes me feel like my head is going to explode after I rack the weight. Any advice for that?
The one rep max was only every 7 weeks to test progress.[/QUOTE
Ah ok. You're definitely making solid progress man. That's a lot of weight.