Possibly the most common mistake I see when deadlifts get heavy is the bar drifting away from the body.
Many lifters assume that a deadlift is just picking the bar straight up, but this isn't effective. As you pile on the plates, you need to think about actively engaging the lats and pulling the bar back into your body so that your weight shifts backward slightly.
Keeping the bar in tight helps ensure every pull is smooth and efficient.
The true Master Blaster discusses planks, high reps for legs, determining your 1-RM without killing yourself, backward rep counting, bad-ass Beta Alanine, building big arms, losing your pump, and the glories of buffalo meat.