Originally Posted by
Bill Anders
That's interesting, as you have the opposite problem as most folks who end up having an "artificially weak deadlift" in relation to your squat.
Perhaps it's time to go to a 9-day break between heavy pulls, which is used in a few different places in the books. So this 420x5 would have been on this coming Monday, based on your 415x5 last Friday.
Another possibility is getting that squat up. You have quite a gap between the two, and both are dependent (and detrimental) on the other. I can't find it right now, but I remember reading many moons ago a comment where Rip talked about how unlikely it would be to have a 400+ deadlift with a <300lb squat. And I don't recall if that was a forum comment or something in an article. But the gist was that your hips, back, and hamstrings won't be up to the task for 400+ pulls if they aren't up to the task of 300+ squats.